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  • ORM on which standards i can select?

    - by just_name
    Q: This question is about how can i figure or select the convenient ORM to my web application. when beginning a new web application,What are the criteria on which i can consider a specific ORM is better than another one for my project or case(web application)? another part of my question : when i begin any web application i use three layers: the DB layer (which contains the connections , and handle the CRUD operations ) the Managers layer(the Data Access Layer) a class for each table on my db (loosely coupled with the previous layer )it contains the CRUD operations for the specific table and the other required operations. the interface layer.. and i use Object Data source.Is that considered as an ORM (as a concept) or I'm wrong in understanding this concept. note:I still a beginner in this field ,, and every day i learn more about web development. please i want explanation and suggestions for this point. Thanks in advance.

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  • Setting Nullable Integer to String Containing Nothing yields 0

    - by Brian MacKay
    I've been pulling my hair out over some unexpected behavior from nullable integers. If I set an Integer to Nothing, it becomes Nothing as expected. If I set an Integer? to a String that is Nothing, it becomes 0! Of course I get this whether I explicitly cast the String to Integer? or not. I realize I could work around this pretty easily but I want to know what I'm missing. Dim NullString As String = Nothing Dim NullableInt As Integer? = CType(NullString, Integer?) 'Expected NullableInt to be Nothing, but it's 0! NullableInt = Nothing 'This works -- NullableInt now contains Nothing. How is this EDIT: Previously I had my code up here so without the explicit conversion to 'Integer?' and everyone seemed to be fixated on that. I want to be clear that this is not an issue that would have been caught by Option Strict On -- check out the accepted answer. This is a quirk of the string-to-integer conversion rules which predate nullable types, but still impact them.

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  • Convert long number as string in the serialization

    - by Bruno
    I have a custom made class that use a long as ID. However, when I call my action using ajax, my ID is truncated and it loses the last 2 numbers because javascript loses precision when dealing with large numbers. My solution would be to give a string to my javascript, but the ID have to stay as a long on the server side. Is there a way to serialize the property as a string? I'm looking for some kind of attribute. Controller public class CustomersController : ApiController { public IEnumerable<CustomerEntity> Get() { yield return new CustomerEntity() { ID = 1306270928525862486, Name = "Test" }; } } Model public class CustomerEntity { public long ID { get; set; } public string Name { get; set; } } JSON Result [{"Name":"Test","ID":1306270928525862400}]

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  • Is a Multi-DAL Approach the way to go here?

    - by Krisc
    Working on the data access / model layer in this little MVC2 project and trying to think things out to future projects. I have a database with some basic tables and I have classes in the model layer that represent them. I obviously need something to connect the two. The easiest is to provide some sort of 'provider' that can run operations on the database and return objects. But this is for a website that would potentially be used "a lot" (I know, very general) so I want to cache results from the data layer and keep the cache updated as new data is generated. This question deals with how best to approach this problem of dual DALS. One that returns cached data when possible and goes to the data layer when there is a cache miss. But more importantly, how to integrate the core provider (thing that goes into database) with the caching layer so that it too can rely on cached objects rather than creating new ones. Right now I have the following interfaces: IDataProvider is used to reach the database. It doesn't concern itself with the meaning of the objects it produces, but simply the way to produce them. interface IDataProvider{ // Select, Update, Create, et cetera access IEnumerable<Entry> GetEntries(); Entry GetEntryById(int id); } IDataManager is a layer that sits on top of the IDataProvider layer and manages the cache interface IDataManager : IDataProvider{ void ClearCache(); } Note that in practice the IDataManager implementation will have useful helper functions to add objects to their related cache stores. (In the future I may define other functions on the interface) I guess what I am looking for is the best way to approach a loop back from the IDataProvider implementations so that they can access the cache. Or a different approach entirely may be in order? I am not very interested in 3rd party products at the moment as I am interested in the design of these things much more than this specific implementation. Edit: I realize the title may be a bit misleading. I apologize for that... not sure what to call this question.

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  • how to populate different records in row of a Grid?

    - by ahmed
    Helo, I have a two Grid where I have to display some records from the table. The table consists of employee names ,manager names and their comments. Now on the first gird I am fetching data of employee names. Now on the second grid I have to display data of manager names and their comments. The data is on the same table. On show button of the first grid it shows all the employees. then on AdvWebGrid.ClickLink or any selected user on the first grid , i have to display the manager names and their comments on the second grid. How can I do that ? Hope my problem is clear?

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  • CKEdtior not displaying

    - by user1708468
    I am trying to integrate CKEditor into a MVC application. As far as I can tell all I should really have to do is. Add the following to my master page. <script type="text/javascript" src="../../ckeditor/ckeditor.js"></script> <script type="text/javascript" src="../../ckeditor/adapters/jquery.js"></script> <script type="text/jscript" src="../../Scripts/jquery-1.3.2.js"></script> Then on my view itself. I have the following code: <script type="text/javascript"> $(document).ready(function() { $('#news').ckeditor(); }); </script> <fieldset> <legend>Fields</legend> <p> <label for="title">Title:</label> <%=Html.TextBox("title")%> <%= Html.ValidationMessage("title", "*") %> </p> <p> <label for="news">News:</label> <%=Html.TextArea("news")%> <%= Html.ValidationMessage("news", "*") %> </p> <p> <label for="publishedDate">Publication Date:</label> <%= Html.TextBox("publishedDate") %> <%= Html.ValidationMessage("publishedDate", "*") %> </p> <p> <input type="submit" value="Create" /> </p> </fieldset> Please bear in mind I am not trying to get this to actually DO anything postback wise. Just to actually render in the first place. Can someone point out exactly what it is I am doing wrong? Oh and if it helps any VS is also giving me the following warning: Warning 1 Error updating JScript IntelliSense: ..Cut to Protect the innocent..\ckeditor\ckeditor.js: 'getFirst()' is null or not an object @ 15:180 ..Cut to Protect the innocent..\Views\Shared\Admin.Master 1 1 ilaTraining

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  • Find the right parameters for an event without using Design Mode in Visual Studio 2010

    - by Jason
    Is there a way to know what parameters are needed by an event in Visual Studio 2010? Let's say I have a DropDownList control and I want to bind a method to the "OnSelectedIndexChanged", I would do something like this In the ASPX File: <asp:DropDownList ID="lstMyList" runat="server" OnSelectedIndexChanged="lstMyList_SelectedIndexChanged"></asp:DropDownList> In the codebehind: protected void lstMyList_SelectedIndexChanged(object sender, EventArgs e) { ... } Is there a way to know what parameters the method needs? (In this case, an object for the sender and an EventArgs parameter for the event.) I know you can easily create the method by double-clicking the right event in Design Mode, but it does a mess with your code so I prefer not to use it. Thanks!

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  • html.actionlink doesn't passing parameter to controller action

    - by FosterZ
    hi, m having problem in passing parameter to controller action, i have done the following Url.Action("SchoolDetails","School",new{id=item.SchoolId}) and my controller action follows public ActionResult SchoolDetails(string schoolId,_ASI_School schoolDetail) { schoolDetail = SchoolRepository.GetSchoolById(schoolId); return View(schoolDetail); } i dn't know why the schoolId above in action is getting null..

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  • Using the same code in different (partial) views

    - by Danny Chen
    Maybe this question is quite simple because I'm new to MVC2. I have a simple demo MVC project. (1) A weak-typed view: Index.aspx <% Html.RenderPartial("ArticalList", ViewData["AllArticals"] as List<Artical>); %> (2) A strong-typed partical view: ArticalList.ascx <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<List<Artical>>" %> <% foreach (Artical a in Model) { %> <%= Html.ActionLink(a.Title, "About", new { id = a.ID })%><br /> <%} %> (3) Here is the HomeController.cs public ActionResult Index() { ViewData["AllArticals"] = Artical.GetArticals(); return View(); } public ActionResult ArticalList() { return PartialView(Artical.GetArticals()); } Sorry I'm using a Web-Form "angle", because if I'm using a Web-Form, when I visit Index.aspx, rendering ArticalList.ascx will call public ActionResult ArticalList(). But here I need to write Artical.GetArticals() twice in two actions. How can I put them in one?

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  • import excel to sql db table

    - by droyce
    I am trying to write data from an excel spread sheet to a SQL Database. I have been able to connect to the Excel Spreadsheet and read the data but I am unable to get the data to insert into the SQL DB table. the current code is as follows any help most appreciated. Dim plmExcelCon As System.Data.OleDb.OleDbConnection Dim ldExcelDS As System.Data.DataSet Dim cmdLoadExcel As System.Data.OleDb.OleDbDataAdapter Dim PrmPathExcelFile As String PrmPathExcelFile = txtImportFileLocation.Text.ToString plmExcelCon = New System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + PrmPathExcelFile + ";Extended Properties=Excel 12.0;") cmdLoadExcel = New System.Data.OleDb.OleDbDataAdapter("select * from [" + txtImportSheetName.Text + "$]", plmExcelCon) ldExcelDS = New System.Data.DataSet cmdLoadExcel.Fill(ldExcelDS) dgvImportData.DataSource = ldExcelDS.Tables(0) plmExcelCon.Close() cmdINSERT.Parameters("@[SQL COLUMN NAME]").Value = [Not sure how to set value from datagrid view] cnLD.Open() cmdINSERT.ExecuteNonQuery() cnLD.Close()

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  • Javascript not registering/executing after button click

    - by rs
    I have a textbox which i convert to tinymce textbox using tinymce.js file. I'm trying to add a new script with database fields substituted based on selection made from dropdownlist to page using registerstartupscript. In page load protected sub page_load(byVal sender as object, byval e as EventArgs) handles me.load AddScriptToPage() if not page.ispostback() then session("fname") = nothing end if end sub Script Method Sub AddScriptToPage() dim _script = " c.onRenderMenu.add(function(c, m) { " & _ add_columns() & _ "}); " ClientScript.RegisterStartupScript(Me.GetType(), keyword,_script) End Sub function add_columns() as string dim ret_string = String.empty select case ddlList.selectedvalue case 1 sqlcommand = "xyz" case 2 sqlcommand = "xyz" case 3 //Load from excel sqlcommand = nothing end select if sqlcommand isnot nothing then executereader() while reader.read() ret_string = ret_string & reader("column") end while elseif session("fname") isnot nothing dt = getdatatable(session("fname").tostring()) //method that opens oledb connection and returns columns for each dr in dt.rows ret_string = ret_string & dr("column") next end if add_columns = ret_string end function When excel file is uploaded to server this event is called protected sub btnclick(byVal sender as object, byval e as EventArgs) if hasfile then 'i have custom properties set after control validation 'Upload file 'set session value with filepath session("fname") = filepath 'call js register event AddScriptToPage() end if end sub When i click upload button i'm calling AddScriptToPage, and debug it it hits AddScripttoPage event and executes it but it doesn't showup on page. It should show column names in tinymce editor but it doesn't. But when i click another button on the same page it shows (becos session has the filename). On Upload button click page flow: Page load - AddScriptToPage is executed (registers scripts with no columns) Then AddScriptToPage in btnclick event is executed (registers scripts with columns) Why is this script not getting registered even though it is executed on vb code on uploadclick event? And why does it show up after another button click and not original button click that calls this event?

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  • Dynamically create textbox

    - by comii
    I need to dynamically create textbox. This is my code, but with this I create only one textbox: Public Sub CreateTextBox() Dim I As Integer Dim niz As Array For I = 1 To 5 Dim myTextBox = New TextBox myTextBox.Text = "Control Number:" & I Me.Controls.Add(myTextBox) Next End Sub So how i can dynamically create textbox? Thanks!

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  • Why would an error get thrown inside my try-catch?

    - by George Johnston
    Why would my try-catch block still be throwing an error when it's handled? Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Try Here >> : _MemoryStream.Seek(6 * StartOffset, 0) _MemoryStream.Read(_Buffer, 0, 6) Catch ex As IOException // Handle Error End Try Edit: Cleaned the question up to remove the extraneous information.

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  • Linkbutton to open Windows Explorer from Gridview

    - by xt_20
    Hi all, I have a link in a Gridview that I want opened in Windows Explorer (or explorer.exe). <asp:GridView ID="GridView1"runat="server" > <Columns> <asp:TemplateField> <ItemTemplate> <asp:LinkButton ID="DeploymentLocation" runat="server" CommandName="OpenLink" Text='<%# Eval("DeploymentLocation") %>' CommandArgument='<%# Eval("DeploymentLocation") %>' /> </ItemTemplate> </asp:TemplateField> </Columns> and in codebehind I have this: protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e) { Process.Start("explorer.exe", "/n," + e.CommandArgument.ToString()); } Obviously this doesn't work as Process.Start only works if I have full permissions, etc, etc. I heard that I can use Javascript to do this, but haven't succeeded so far. Basically, what I want is the exact link that is displayed in the grid to be opened when clicked. Any help would be much appreciated! Thanks!

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  • NHibernate 3 and MySQL setup tutorial

    - by ryanzec
    Since I have given up on using the entity framework 4 as my ORM (getting it to work with MySQL and mapping table/field names like this_table/this_field to object naming like ThisTable/ThisField is POCO) I am now looking at NHibernate as it seems the the next big well know ORM for C# that probably with not die off any time soon. I am trying to lookup some tutorials and a lot of them in the configuration section have 2-2 in it and was wondering if those configuration would work with NHibernate 3? I am just curious if the 2-2 refers to the version of NHibernate or something different.

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  • showing content from subdomain

    - by coure06
    I have a root site in httpdocs folder. There is another website (for subdomain) at httpdocs/demo1 Mapping is like www.abc.com to httpdocs demo1.abco.com to httpdocs/demo1 How can I show image from demo1 folder? I want to access it like www.abc.com/demo1/images/some.png Error: Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.

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  • How can I ajax load new pages/views into MainContent when using a master page

    - by antevirus
    Hello. Instead of using Html.ActionLink to load subpages into MainContent, I would like to load them with ajax. For example (taken from Site.Master): <%= Ajax.ActionLink("HOME", "Index", "Home", new AjaxOptions() { UpdateTargetId = "main" })% <%= Ajax.ActionLink("ABOUT ME", "Index", "About", new AjaxOptions() { UpdateTargetId = "main" })% <%= Ajax.ActionLink("VIEW MY WORK", "Index", "Work", new AjaxOptions() { UpdateTargetId = "main" })% <%= Ajax.ActionLink("SERVICES", "Index", "Services", new AjaxOptions() { UpdateTargetId = "main" })% <%= Ajax.ActionLink("CONTACT", "Index", "Contact", new AjaxOptions() { UpdateTargetId = "main" })% This works, but when i click one of the links it seems to load the master page all over again. http://emma.jabit.se Click a link and see what happens. Any ideas how to solve this?

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  • tabcontainer button postback problem

    - by yousof
    I have a dropdownlist in my web page and two command buttons and a tabcontainer. The tabcontainer does not appear after the load of page according to my code. Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If Not IsPostBack Then TabContainer1.Visible = False If CtvAct.GetRecords("Fill_RequestTypeTb") = True Then ReqTypeCmbo.DataSource = CtvAct.MainDataset.Tables("tbOLRequestType").DefaultView ReqTypeCmbo.DataTextField = "RequestTypeName" ReqTypeCmbo.DataValueField = "RequestTypeId" ReqTypeCmbo.DataBind() Dim itm As New ListItem itm.Text = "-- ??? ??? ????? --" itm.Value = "-1" itm.Selected = True ReqTypeCmbo.Items.Insert(0, itm) ReqTypeCmbo.SelectedIndex = 0 End If End If End Sub Protected Sub PrntCmd_Click(ByVal sender As Object, ByVal e As EventArgs) Handles PrntCmd.Click TextBox6.Text = "gggg" End Sub If I press any button after page load the button work very selecting any item from dropdownlist make the tabcontainer appear but after the tabcontainer appear, the buttons does not work (postback) how can I solve these problems

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  • C#: Changing the order of columns when binding DataTable to a GridView

    - by Nir
    How is it possible to change the displayed order of columns from a DataTable? For example, dataTable "dt" contains two columns "a" and "b". I bind it to a GridView like this: gridView.DataSource = dt; gridView.DataBind(); But I'd like the GridView to display "b" first (leftmost). Important point: I'm using this to export to Excel and there's no actual output to screen, using: HtmlTextWriter htw = new HtmlTextWriter(sw); gridView.RenderControl(htw); Thanks!

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  • In Entity framework, we can use Model first, DB first, Code first but how can we create table programmatically

    - by AukI
    In entity framework we can use 3 approaches model first , code first , database first but each one of them needs manual hand touch(means creating database or create model or write the POCO class codes or entity class codes) before proceeding to the next step ( using EF in context ). What if I want to create database and tables and table relationships programatically and still want to have to features of EntityFramework 4.3. To be more specific , from this example http://support.microsoft.com/kb/307283 we can create database , tables and everything using SQL command but we can't have the advantages of entity framework. So if we want to have that what should we do?

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  • How can I copy an XmlNode from one XmlDocument to another?

    - by Chris Wenham
    I'm building a tool that authors/edits XML files, and I want to be able to populate it with template fragments defined in another XML file. For example, the tool has an "Add FooBarBaz Element" button that adds a element to the new document being created, and I want to add FooBarBaz by copying it from a template. Or let's say this is my template file: <Templates> <FooBarBaz Attribute="Value"> <ChildElement/> </FooBarBaz> </Templates> I can then grab a template fragment with .GetElementsByTagName("FooBarBaz"), and I'd like to be able to inject it into the new document with something like .AppendChild(templateNode). But the problem is that an XmlNode cannot be copied from one XmlDocument to another, even if you use .Clone() or .CloneNode(), because AppendChild() throws an exception saying that the template element belongs to another context. Is there an easy way to copy a System.Xml.XmlNode between System.Xml.XmlDocuments?

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  • What's wrong in this SELECT statement

    - by user522211
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim SQLData As New System.Data.SqlClient.SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True") Dim cmdSelect As New System.Data.SqlClient.SqlCommand("SELECT * FROM Table1 WHERE Seats ='" & TextBox1.Text & "'", SQLData) SQLData.Open() Using adapter As New SqlDataAdapter(cmdSelect) Using table As New Data.DataTable() adapter.Fill(table) TextBox1.Text = [String].Join(", ", table.AsEnumerable().[Select](Function(r) r.Field(Of Integer)("seat_select"))) End Using End Using SQLData.Close() End Sub This line will be highlighted with blue line: TextBox1.Text = [String].Join(", ", table.AsEnumerable().[Select](Function(r) r.Field(Of Integer)("seat_select")))

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