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  • WinForms/Console application on Mono, how to know it runs as root

    - by Lex Li-MSFT
    As we can execute such executables in two ways, such as "sudo mono test.exe", and "mono test.exe". Now I want to know how to detect whether this application is running as root inside the application itself. I tried to check user name like below and see whether they equal to "root", Thread.CurrentPrincipal.Identity.Name Process.GetCurrentProcess().StartInfo.UserName AppDomain.CurrentDomain.ApplicationIdentity.FullName The first two are empty strings always, while the third throws NullReferenceException. Please advise if this is doable on Mono 2.6.

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  • multiple Button click

    - by Bharat
    hello there i have 5 buttons in row (btn1,btn2,btn3,btn4,btn5) and 1 OK button when i click indivisually to each button of 5 buttons its color changes to red and after click on OK button the color of buttons which are red turns green the problem is that i don't know how to insert induvisual record of each button of which color is green in access database help me if you have any answer

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  • Segmenting a double array of labels

    - by Ami
    The Problem: I have a large double array populated with various labels. Each element (cell) in the double array contains a set of labels and some elements in the double array may be empty. I need an algorithm to cluster elements in the double array into discrete segments. A segment is defined as a set of pixels that are adjacent within the double array and one label that all those pixels in the segment have in common. (Diagonal adjacency doesn't count and I'm not clustering empty cells). |-------|-------|------| | Jane | Joe | | | Jack | Jane | | |-------|-------|------| | Jane | Jane | | | | Joe | | |-------|-------|------| | | Jack | Jane | | | Joe | | |-------|-------|------| In the above arrangement of labels distributed over nine elements, the largest cluster is the “Jane” cluster occupying the four upper left cells. What I've Considered: I've considered iterating through every label of every cell in the double array and testing to see if the cell-label combination under inspection can be associated with a preexisting segment. If the element under inspection cannot be associated with a preexisting segment it becomes the first member of a new segment. If the label/cell combination can be associated with a preexisting segment it associates. Of course, to make this method reasonable I'd have to implement an elaborate hashing system. I'd have to keep track of all the cell-label combinations that stand adjacent to preexisting segments and are in the path of the incrementing indices that are iterating through the double array. This hash method would avoid having to iterate through every pixel in every preexisting segment to find an adjacency. Why I Don't Like it: As is, the above algorithm doesn't take into consideration the case where an element in the double array can be associated with two unique segments, one in the horizontal direction and one in the vertical direction. To handle these cases properly, I would need to implement a test for this specific case and then implement a method that will both associate the element under inspection with a segment and then concatenate the two adjacent identical segments. On the whole, this method and the intricate hashing system that it would require feels very inelegant. Additionally, I really only care about finding the large segments in the double array and I'm much more concerned with the speed of this algorithm than with the accuracy of the segmentation, so I'm looking for a better way. I assume there is some stochastic method for doing this that I haven't thought of. Any suggestions?

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  • How to catch GMail auto-refresh

    - by nameanyone
    I wrote a userscript to highlight the current row in GMail (indicated by the arrow). Unfortunately the highlight will only stay until GMail Inbox is auto-refreshed, which happens quite often. Is there a way to catch that event so I could reapply the highlighting? I don't want to do it on timeout. There is another userscript that does that and it loads up CPU.

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  • Why do I get rows of zeros in my 2D fft?

    - by Nicholas Pringle
    I am trying to replicate the results from a paper. "Two-dimensional Fourier Transform (2D-FT) in space and time along sections of constant latitude (east-west) and longitude (north-south) were used to characterize the spectrum of the simulated flux variability south of 40degS." - Lenton et al(2006) The figures published show "the log of the variance of the 2D-FT". I have tried to create an array consisting of the seasonal cycle of similar data as well as the noise. I have defined the noise as the original array minus the signal array. Here is the code that I used to plot the 2D-FT of the signal array averaged in latitude: import numpy as np from numpy import ma from matplotlib import pyplot as plt from Scientific.IO.NetCDF import NetCDFFile ### input directory indir = '/home/nicholas/data/' ### get the flux data which is in ### [time(5day ave for 10 years),latitude,longitude] nc = NetCDFFile(indir + 'CFLX_2000_2009.nc','r') cflux_southern_ocean = nc.variables['Cflx'][:,10:50,:] cflux_southern_ocean = ma.masked_values(cflux_southern_ocean,1e+20) # mask land nc.close() cflux = cflux_southern_ocean*1e08 # change units of data from mmol/m^2/s ### create an array that consists of the seasonal signal fro each pixel year_stack = np.split(cflux, 10, axis=0) year_stack = np.array(year_stack) signal_array = np.tile(np.mean(year_stack, axis=0), (10, 1, 1)) signal_array = ma.masked_where(signal_array > 1e20, signal_array) # need to mask ### average the array over latitude(or longitude) signal_time_lon = ma.mean(signal_array, axis=1) ### do a 2D Fourier Transform of the time/space image ft = np.fft.fft2(signal_time_lon) mgft = np.abs(ft) ps = mgft**2 log_ps = np.log(mgft) log_mgft= np.log(mgft) Every second row of the ft consists completely of zeros. Why is this? Would it be acceptable to add a randomly small number to the signal to avoid this. signal_time_lon = signal_time_lon + np.random.randint(0,9,size=(730, 182))*1e-05 EDIT: Adding images and clarify meaning The output of rfft2 still appears to be a complex array. Using fftshift shifts the edges of the image to the centre; I still have a power spectrum regardless. I expect that the reason that I get rows of zeros is that I have re-created the timeseries for each pixel. The ft[0, 0] pixel contains the mean of the signal. So the ft[1, 0] corresponds to a sinusoid with one cycle over the entire signal in the rows of the starting image. Here are is the starting image using following code: plt.pcolormesh(signal_time_lon); plt.colorbar(); plt.axis('tight') Here is result using following code: ft = np.fft.rfft2(signal_time_lon) mgft = np.abs(ft) ps = mgft**2 log_ps = np.log1p(mgft) plt.pcolormesh(log_ps); plt.colorbar(); plt.axis('tight') It may not be clear in the image but it is only every second row that contains completely zeros. Every tenth pixel (log_ps[10, 0]) is a high value. The other pixels (log_ps[2, 0], log_ps[4, 0] etc) have very low values.

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  • c#: Clean way to fit a collection into a multidimensional array?

    - by Rosarch
    I have an ICollection<MapNode>. Each MapNode has a Position attribute, which is a Point. I want to sort these points first by Y value, then by X value, and put them in a multidimensional array (MapNode[,]). The collection would look something like this: (30, 20) (20, 20) (20, 30) (30, 10) (30, 30) (20, 10) And the final product: (20, 10) (20, 20) (20, 30) (30, 10) (30, 20) (30, 30) Here is the code I have come up with to do it. Is this hideously unreadable? I feel like it's more hacky than it needs to be. private Map createWorldPathNodes() { ICollection<MapNode> points = new HashSet<MapNode>(); Rectangle worldBounds = WorldQueryUtils.WorldBounds(); for (float x = worldBounds.Left; x < worldBounds.Right; x += PATH_NODE_CHUNK_SIZE) { for (float y = worldBounds.Y; y > worldBounds.Height; y -= PATH_NODE_CHUNK_SIZE) { // default is that everywhere is navigable; // a different function is responsible for determining the real value points.Add(new MapNode(true, new Point((int)x, (int)y))); } } int distinctXValues = points.Select(node => node.Position.X).Distinct().Count(); int distinctYValues = points.Select(node => node.Position.Y).Distinct().Count(); IList<MapNode[]> mapNodeRowsToAdd = new List<MapNode[]>(); while (points.Count > 0) // every iteration will take a row out of points { // get all the nodes with the greatest Y value currently in the collection int currentMaxY = points.Select(node => node.Position.Y).Max(); ICollection<MapNode> ythRow = points.Where(node => node.Position.Y == currentMaxY).ToList(); // remove these nodes from the pool we're picking from points = points.Where(node => ! ythRow.Contains(node)).ToList(); // ToList() is just so it is still a collection // put the nodes with max y value in the array, sorting by X value mapNodeRowsToAdd.Add(ythRow.OrderByDescending(node => node.Position.X).ToArray()); } MapNode[,] mapNodes = new MapNode[distinctXValues, distinctYValues]; int xValuesAdded = 0; int yValuesAdded = 0; foreach (MapNode[] mapNodeRow in mapNodeRowsToAdd) { xValuesAdded = 0; foreach (MapNode node in mapNodeRow) { // [y, x] may seem backwards, but mapNodes[y] == the yth row mapNodes[yValuesAdded, xValuesAdded] = node; xValuesAdded++; } yValuesAdded++; } return pathNodes; } The above function seems to work pretty well, but it hasn't been subjected to bulletproof testing yet.

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  • Can a BufferedImage be written to file any format?

    - by ncoder
    Is it correct that if we have a BufferedImage object in java, we could potentially write it out in ANY format using ImageIO.write (if we have a Writer object for the same)? I tried writing a BufferedImage object into a jpg file, it outputted an empty image file however when i tried writing it in to a png file, it worked fine.

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  • Beginner problem with posting data table to JsonResult

    - by ognjenb
    With this script I get data from JsonResult (GetDevicesTable) and put them to table ( id="OrderDevices") <script type="text/javascript"> $(document).ready(function() { $("#getDevices a").click(function() { var Id = $(this).attr("rel"); var rowToMove = $(this).closest("tr"); $.post("/ImportXML/GetDevicesTable", { Id: Id }, function(data) { if (data.success) { //remove row rowToMove.fadeOut(function() { $(this).remove() }); //add row to other table $("#OrderDevices").append("<tr><td>"+ data.DeviceId+ "</td><td>" + data.Id+ "</td><td>" + data.OrderId + "</td></tr>"); } else { alert(data.ErrorMsg); } }, "json"); }); }); <% using (Html.BeginForm()) {%> <table id="OrderDevices" class="data-table"> <tr> <th> DeviceId </th> <th> Id </th> <th> OrderId </th> </tr> </table> <p> <input type="submit" value="Submit" /> </p> <% } %> When click on Submit I need something like this: $(document).ready(function() { $("#submit").click(function() { var Id = $(this).attr("rel"); var DeviceId = $(this).attr(???); var OrderId = $(this).attr(???); var rowToMove = $(this).closest("tr"); $.post("/ImportXML/DevicesActions", { Id: Id, DeviceId:DeviceId, OrderId:OrderId }, function(data) { }, "json"); }); }); I have problem with this script because do not know how post data to this JsonResult: public JsonResult DevicesActions(int Id,int DeviceId,int OrderId) { orderdevice ord = new orderdevice(); ord.Id = Id; ord.OrderId = DeviceId; ord.DeviceId = OrderId; DBEntities.AddToorderdevice(ord); DBEntities.SaveChanges(); }

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  • Add Imagebutton to DataGridView in C#

    - by espais
    I am trying to do a simple 'Delete Row' button in a DataGridView that I have, but the problem is that I would like it to be an ImageButton rather than a simple Button. Currently I have it setup to be a ButtonColumn, but have seen no possibility for changing it from a simple button with text to a button with an image on it. I know this is possible and hopefully relatively simple, but am unsure of how to go about doing it.

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  • PIVOT / UNPIVOT IN SQL 2008

    - by Nev_Rahd
    Hello I got child / parent tables as below. MasterTable: MasterID, Description ChildTable ChildID, MasterID, Description. Using PIVOT / UNPIVOT how can i get result as below in single row. if (MasterID : 1 got x child records) MasterID, ChildID1, Description1, ChildID2, Description2....... ChildIDx, Descriptionx Thanks

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  • DataGridView Check Box selection

    - by adopilot
    I added datagridview to my win forms app and I also added one Check Box for marking rows. ChekBox work as I accepted until user do sorting of DataGridView, After that previous selection of checkbox column get lost. Is there a way to I make my datagridview remember which row is selected and after user do a sorting.

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  • cannot retrieve effect.fx file

    - by numerical25
    I am having issues loading my effect.fx from directx. When I step into my application, my ID3D10Effect *m_pDefaultEffect; pointer remains empty. the address remains at 0x000000 below is my code #pragma once #include "stdafx.h" #include "resource.h" #include "d3d10.h" #include "d3dx10.h" #include "dinput.h" #define MAX_LOADSTRING 100 class RenderEngine { protected: RECT m_screenRect; //direct3d Members ID3D10Device *m_pDevice; // The IDirect3DDevice10 // interface ID3D10Texture2D *m_pBackBuffer; // Pointer to the back buffer ID3D10RenderTargetView *m_pRenderTargetView; // Pointer to render target view IDXGISwapChain *m_pSwapChain; // Pointer to the swap chain RECT m_rcScreenRect; // The dimensions of the screen ID3D10Texture2D *m_pDepthStencilBuffer; ID3D10DepthStencilState *m_pDepthStencilState; ID3D10DepthStencilView *m_pDepthStencilView; //transformation matrixs D3DXMATRIX g_mtxWorld; D3DXMATRIX g_mtxView; D3DXMATRIX g_mtxProj; //Effect members ID3D10Effect *m_pDefaultEffect; ID3D10EffectTechnique *m_pDefaultTechnique; ID3DX10Font *m_pFont; // The font used for rendering text // Sprites used to hold font characters ID3DX10Sprite *m_pFontSprite; ATOM RegisterEngineClass(); void DoFrame(float); bool LoadEffects(); public: static HINSTANCE m_hInst; HWND m_hWnd; int m_nCmdShow; TCHAR m_szTitle[MAX_LOADSTRING]; // The title bar text TCHAR m_szWindowClass[MAX_LOADSTRING]; // the main window class name void DrawTextString(int x, int y, D3DXCOLOR color, const TCHAR *strOutput); //static functions static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam); static INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam); bool InitWindow(); bool InitDirectX(); bool InitInstance(); int Run(); void ShutDown(); RenderEngine() { m_screenRect.right = 800; m_screenRect.bottom = 600; } }; below is the implementation bool RenderEngine::LoadEffects() { HRESULT hr; ID3D10Blob *pErrors = 0; // Create the default rendering effect hr = D3DX10CreateEffectFromFile(L"effect.fx", NULL, NULL, "fx_4_0", D3D10_SHADER_DEBUG, 0, m_pDevice, NULL, NULL, &m_pDefaultEffect, &pErrors, NULL); if(pErrors)// at this point, m_pDefaultEffect is still empty but pErrors returns data which means there is {//errors return false; //ends here } //m_pDefaultTechnique = m_pDefaultEffect->GetTechniqueByName("DefaultTechnique"); return true; } My directx Device does work. My effect.fx file is in the same folder as my solution files (.cpp and header files)

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  • fluentnhibernate ManyToMany does not add records to the junction table

    - by Bertvan
    When saving my many-to-many related entities, the entities are saved ok. However the junction table stays empty: Mapping on Product side (ProductMap.cs) HasManyToMany(x = x.Pictures) .Table("Product_Picture") .ParentKeyColumn("Product") .ChildKeyColumn("Picture") .Cascade.All() .Inverse() Mapping on Picture side (PictureMap.cs) HasManyToMany(x = x.Products) .Table("Product_Picture") .ParentKeyColumn("Picture") .ChildKeyColumn("Product") .Cascade.All(); Any ideas? (btw i can't seem to get the code formatting to work, my 4 spaces are there !)

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  • WPF - ListBox ignores Style When ItemsSource is bound

    - by Andy T
    Hi, I have created styled a ListBox in WPF so that it is rendered as a checkbox list. When I populate the ListBox's items manually, the styling works perfectly. However, when I instead bind the ItemsSource of the ListBox to a static resource (an ItemsControl containing the required items), the styling is completely dropped. Here's the style: <Style x:Key="CheckBoxListStyle" TargetType="ListBox"> <Style.Resources> <Style TargetType="ListBoxItem"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="ListBoxItem"> <Grid Margin="2"> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" /> <ColumnDefinition /> </Grid.ColumnDefinitions> <CheckBox IsChecked="{Binding IsSelected, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"/> <ContentPresenter Grid.Column="1" Margin="2,0,0,0" /> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style> </Style.Resources> <Setter Property="ItemsPanel"> <Setter.Value> <ItemsPanelTemplate> <WrapPanel Orientation="Vertical" /> </ItemsPanelTemplate> </Setter.Value> </Setter> <Setter Property="BorderThickness" Value="0" /> <Setter Property="Background" Value="Transparent" /> </Style> Here's the code for the ListBox that shows the style correctly: <ListBox x:Name="ColumnsList" Grid.Column="0" Grid.Row="0" Style="{StaticResource CheckBoxListStyle}" BorderThickness="1"> <ListBox.Items> <ListBoxItem>Test</ListBoxItem> <ListBoxItem>Test2</ListBoxItem> <ListBoxItem>Test3</ListBoxItem> </ListBox.Items> </ListBox> Here's the code for the ListBox that ignores the style: <ListBox x:Name="ColumnsList2" Grid.Column="0" Grid.Row="0" Style="{StaticResource CheckBoxListStyle}" BorderThickness="1" ItemsSource="{Binding Source={StaticResource Test1}, Path=Items}"> </ListBox> Hoping someone can help - I'm pretty new to all this and have tried everything I can think of, but everything I've read leads me to believe that setting ItemsSource should have the same outcome as setting the items manually, so I can't see any reason why this would not work. Thanks, AT

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  • Python directory list returned to Django template

    - by Shu
    Total Python newb here. I have a images directory and I need to return the names and urls of those files to a django template that I can loop through for links. I know it will be the server path, but I can modify it via JS. I've tried os.walk, but I keep getting empty results.

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  • A continued saga of C# interoprability with unmanaged C++

    - by Gilad
    After a day of banging my head against the wall both literally and metaphorically, I plead for help: I have an unmanaged C++ project, which is compiled as a DLL. Let's call it CPP Project. It currently works in an unmanaged environment. In addition, I have created a WPF project, that shall be called WPF Project. This project is a simple and currently almost empty project. It contains a single window and I want it to use code from Project 1. For that, I have created a CLR C++ project, which shall be called Interop Project and is also compiled as a DLL. For simplicity I will attach some basic testing code I have boiled down to the basics. CPP Project has the following two testing files: tester.h #pragma once extern "C" class __declspec(dllexport) NativeTester { public: void NativeTest(); }; tester.cpp #include "tester.h" void NativeTester::NativeTest() { int i = 0; } Interop Project has the following file: InteropLib.h #pragma once #include <tester.h> using namespace System; namespace InteropLib { public ref class InteropProject { public: static void Test() { NativeTester nativeTester; nativeTester.NativeTest(); } }; } Lastly, WPF Project has a single window refrencing Interop Project: MainWindow.xaml.cs using System; using System.Windows; using InteropLib; namespace AppGUI { public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); InteropProject.Test(); } } } And the XAML itself has an empty window (default created). Once I am trying to run the WPF project, I get the following error: System.Windows.Markup.XamlParseException: 'The invocation of the constructor on type 'AppGUI.MainWindow' that matches the specified binding constraints threw an exception.' Line number '3' and line position '9'. --- System.IO.FileNotFoundException: Could not load file or assembly 'InteropLib.dll' or one of its dependencies. The specified module could not be found. at AppGUI.MainWindow..ctor() Interestingly enough, if I do not export the class from CPP Project, I do not get this error. Say, if i change tester.h to: #pragma once class NativeTester { public: void NativeTest() { int i = 0; } }; However, in this case I cannot use my more complex classes. If I move my implementation to a cpp file like before, I get unresolved linkage errors due to my not exporting my code. The C++ code I want to actually use is large and has many classes and is object oriented, so I can't just move all my implementation to the h files. Please help me understand this horrific error I've been trying resolve without success. Thanks.

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  • How to use an UpdatePanel inside a Reapeater ItemTemplate with a HTML Table

    - by vanslly
    I want to allow the user to edit by data by row, so only need content updated by row. I managed to achieve this by using a Repeater with a UpdatePanel in the ItemTemplate. Using a div <asp:ScriptManager ID="ctlScriptManager" runat="server" /> <asp:Repeater ID="ctlMyRepeater" runat="server"> <ItemTemplate> <div> <asp:UpdatePanel ID="ctlUpdatePanel" runat="server"> <ContentTemplate> <asp:Label ID="lblName" runat="server" Text='<%# Eval("Name") %>' /> <asp:LinkButton ID="btnRename" runat="server" CommandArgument='<%# Eval("ID") %>' CommandName="Rename">Rename...</asp:LinkButton> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="btnRename" EventName="Click" /> </Triggers> </asp:UpdatePanel> </div> </ItemTemplate> </asp:Repeater> But, I want to use a table to ensure structure and spacing and CSS styling wasn't doing it for me, but when I use a table everything goes whacky. Using a Table <asp:ScriptManager ID="ctlScriptManager" runat="server" /> <table> <asp:Repeater ID="ctlMyRepeater" runat="server"> <ItemTemplate> <asp:UpdatePanel ID="ctlUpdatePanel" runat="server"> <ContentTemplate> <tr> <td> <asp:Label ID="lblName" runat="server" Text='<%# Eval("Name") %>' /> </td> <td> <asp:LinkButton ID="btnRename" runat="server" CommandArgument='<%# Eval("ID") %>' CommandName="Rename">Rename...</asp:LinkButton> </td> </tr> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="btnRename" EventName="Click" /> </Triggers> </asp:UpdatePanel> </ItemTemplate> </asp:Repeater> </table> What's the best way to solve this problem? I prefer using a table, because I really want to enfore structure without reliance on CSS. Thanks in advance.

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  • Performance Optimization for Matrix Rotation

    - by Summer_More_More_Tea
    Hello everyone: I'm now trapped by a performance optimization lab in the book "Computer System from a Programmer's Perspective" described as following: In a N*N matrix M, where N is multiple of 32, the rotate operation can be represented as: Transpose: interchange elements M(i,j) and M(j,i) Exchange rows: Row i is exchanged with row N-1-i A example for matrix rotation(N is 3 instead of 32 for simplicity): ------- ------- |1|2|3| |3|6|9| ------- ------- |4|5|6| after rotate is |2|5|8| ------- ------- |7|8|9| |1|4|7| ------- ------- A naive implementation is: #define RIDX(i,j,n) ((i)*(n)+(j)) void naive_rotate(int dim, pixel *src, pixel *dst) { int i, j; for (i = 0; i < dim; i++) for (j = 0; j < dim; j++) dst[RIDX(dim-1-j, i, dim)] = src[RIDX(i, j, dim)]; } I come up with an idea by inner-loop-unroll. The result is: Code Version Speed Up original 1x unrolled by 2 1.33x unrolled by 4 1.33x unrolled by 8 1.55x unrolled by 16 1.67x unrolled by 32 1.61x I also get a code snippet from pastebin.com that seems can solve this problem: void rotate(int dim, pixel *src, pixel *dst) { int stride = 32; int count = dim >> 5; src += dim - 1; int a1 = count; do { int a2 = dim; do { int a3 = stride; do { *dst++ = *src; src += dim; } while(--a3); src -= dim * stride + 1; dst += dim - stride; } while(--a2); src += dim * (stride + 1); dst -= dim * dim - stride; } while(--a1); } After carefully read the code, I think main idea of this solution is treat 32 rows as a data zone, and perform the rotating operation respectively. Speed up of this version is 1.85x, overwhelming all the loop-unroll version. Here are the questions: In the inner-loop-unroll version, why does increment slow down if the unrolling factor increase, especially change the unrolling factor from 8 to 16, which does not effect the same when switch from 4 to 8? Does the result have some relationship with depth of the CPU pipeline? If the answer is yes, could the degrade of increment reflect pipeline length? What is the probable reason for the optimization of data-zone version? It seems that there is no too much essential difference from the original naive version. EDIT: My test environment is Intel Centrino Duo processor and the verion of gcc is 4.4 Any advice will be highly appreciated! Kind regards!

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  • Do a query only if there are no results on previous query

    - by yes123
    Hi guys: I do this query(1): (1)SELECT * FROM t1 WHERE title LIKE 'key%' LIMIT 1 I need to do a second(2) query only if this previous query has no results (2)SELECT * FROM t1 WHERE title LIKE '%key%' LIMIT 1 basically i need only 1 row who got the most close title to my key. Atm i am using an UNION query with a custom field to order it and a LIMIT 1. Problem is I don't want to do the others query if already the first made the result. Thanks

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  • Autoincrement uniqueidentifier in C#

    - by drasto
    Basically I want to use uniqueidentifier in similar way as identity. I don't want to insert values into it, It should just insert values automatically, different value for each row. I'm not able to set autoincrement on columns of type uniqueidentifier(the property 'autoincrement' is set to false and is not editable).

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  • Is there a way to add or remove a line of an LINQ to DB Query based on if the value being checked is

    - by RandomBen
    If I have a query like this: String Category = HttpContext.Current.Request.QueryString["Product"].ToString(); IQueryable<ItemFile> pressReleases = from file in connection.ItemFile where file.Type_ID == 8 && file.Category == Category select file; Is there a way to make this LINQ Query so that I do no use the line file.Category == Category if Category is null or empty?

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  • iPhone: How to purge a cached UITableViewCell

    - by iPhone dev
    iPhone SDK question: Does anyone have suggestions on how to purge a cached UITableViewCell I'd like to cache these cells with reuseIdentifier. However, there are times when I need to delete or modify some of the table rows. I expect to call reloadData after the row changes. Right now, dequeueReusableCellWithIdentifier always returns the cached(obsolete) entry from before. How do I indicate that the cache is stale and needs to be purged ?

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