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• Simple grid layout question

  - by Matt H.

  I can't believe I'm back to this after working with WPF for 3 months :) Consider very common setup: How do I configure the rowheights so that the top and bottom rows (menu bar and status bar) size to fit the height of their content, and the middle row (main content), fills the remaining available space in the program? I can't fix the height of the top/bottom rows because the height of their content can vary. <Window> <Grid> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <Menu Grid.Row=0> ...menuitems </Menu> <Grid Grid.Row=1> ...main application content here (like most programs) </Grid> <StatusBar> ...statusbaritems </StatusBar> </Grid> </Window>

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• Array help needed for unit conversion application

  - by Manolis

  I have a project to do in Visual Basic. My problem is that the outcome is always wrong (ex. instead of 2011 it gives 2000). And i cannot set as Desired unit the Inch(1) or feet(3), it gives the Infinity error. And if i put as Original and Desired unit the inch(1), the outcome is "Not a Number". Here's the code i made so far. The project is about arrays. Any help appreciated. Public Class Form1 Private Sub btnConvert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConvert.Click Dim original(9) As Long Dim desired(9) As Long Dim a As Integer Dim o As Integer Dim d As Integer Dim inch As Long, fathom As Long, furlong As Long, kilometer As Long Dim meter As Long, miles As Long, rod As Long, yard As Long, feet As Long a = Val(Input3.Text) o = Val(Input1.Text) d = Val(Input2.Text) inch& = 0.0833 rod& = 16.5 yard& = 3 furlong& = 660 meter& = 3.28155 kilometer& = 3281.5 fathom& = 6 miles& = 5280 original(1) = inch original(2) = fathom original(3) = feet original(4) = furlong original(5) = kilometer original(6) = meter original(7) = miles original(8) = rod original(9) = yard desired(1) = inch desired(2) = fathom desired(3) = feet desired(4) = furlong desired(5) = kilometer desired(6) = meter desired(7) = miles desired(8) = rod desired(9) = yard If o < 1 Or o > 9 Or d < 1 Or d > 9 Then MessageBox.Show("Units must range from 1-9.", "Error", _ MessageBoxButtons.OK, _ MessageBoxIcon.Information) Return End If Output.Text = (a * original(o)) / desired(d) End Sub End Class

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• how to add Go to Page No. function in xtrareport from runtime ?

  - by ahmed

  Hello, I would like to customize my report. I would like to remove the report toolbar and add manual options to export to just only pdf and excel. Exporting to pdf and excel is working fine with me. The only thing now I need is to paging the reports. I want to add something like " go to page No ..." and the user will click the page no. Is this clear ? Any help will be appreciated. Thanking you all.

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• Possible uncommitted transactions causing "System.Data.SqlClient.SqlException: Timeout expired" erro

  - by Michael

  My application requires a user to log in and allows them to edit a list of things. However, it seems that if the same user always logs in and out and edits the list, this user will run into a "System.Data.SqlClient.SqlException: Timeout expired." error. I've read comments about increasing the timeout period but I've also read a comment about it possibly caused by uncommitted transactions. And I do have one going in the application. I'll provide the code I'm working with and there is an IF statement in there that I was a little iffy about but it seemed like a reasonable thing to do. I'll just go over what's going on here, there is a list of objects to update or add into the database. New objects created in the application are given an ID of 0 while existing objects have their own ID's generated from the DB. If the user chooses to delete some objects, their IDs are stored in a separate list of Integers. Once the user is ready to save their changes, the two lists are passed into this method. By use of the IF statement, objects with ID of 0 are added (using the Add stored procedure) and those objects with non-zero IDs are updated (using the Update stored procedure). After all this, a FOR loop goes through all the integers in the "removal" list and uses the Delete stored procedure to remove them. A transaction is used for all this. Public Shared Sub UpdateSomethings(ByVal SomethingList As List(Of Something), ByVal RemovalList As List(Of Integer)) Using DBConnection As New SqlConnection(conn) DBConnection.Open() Dim MyTransaction As SqlTransaction MyTransaction = DBConnection.BeginTransaction() Try For Each SomethingItem As Something In SomethingList Using MyCommand As New SqlCommand() MyCommand.Connection = DBConnection If SomethingItem.ID > 0 Then MyCommand.CommandText = "UpdateSomething" Else MyCommand.CommandText = "AddSomething" End If MyCommand.Transaction = MyTransaction MyCommand.CommandType = CommandType.StoredProcedure With MyCommand.Parameters If MyCommand.CommandText = "UpdateSomething" Then .Add("@id", SqlDbType.Int).Value = SomethingItem.ID End If .Add("@stuff", SqlDbType.Varchar).Value = SomethingItem.Stuff End With MyCommand.ExecuteNonQuery() End Using Next For Each ID As Integer In RemovalList Using MyCommand As New SqlCommand("DeleteSomething", DBConnection) MyCommand.Transaction = MyTransaction MyCommand.CommandType = CommandType.StoredProcedure With MyCommand.Parameters .Add("@id", SqlDbType.Int).Value = ID End With MyCommand.ExecuteNonQuery() End Using Next MyTransaction.Commit() Catch ex As Exception MyTransaction.Rollback() 'Exception handling goes here End Try End Using End Sub There are three stored procedures used here as well as some looping so I can see how something can be holding everything up if the list is large enough. Other users can log in to the system at the same time just fine though. I'm using Visual Studio 2008 to debug and am using SQL Server 2000 for the DB.

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• WinForms binding

  - by Anthony

  I have some controls bound to a BindingSource control. I want to do a calculation when the value changes in one control and set the result on another control. Do i update the textbox the property is bound to or do i update the underlying entity which would update the control anyway(i hope)? When i change textbox A...textbox B is updated with the new calculated result..this works fine...but i have noticed that when i Leave textbox A..textbox B reverts back to its original value...what is going on here!

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• LB_SETTABSTOPS does not appear to affect a CheckedListBox

  - by BP

  I am trying to set tab stops in a CheckedListBox in my WinForms application, but no matter what I do, it does not seem to have any effect. I have the following in the code for my form: <DllImport("user32.dll")> _ Public Sub SendMessage(ByVal hWnd As IntPtr, ByVal uMsg As Int32, ByVal wParam As Int32, ByRef lParam As Int32) End Sub Public Const LB_SETTABSTOPS As Int32 = &H192 And in the form's load method, I am doing the following, where theList is my CheckedListBox: Dim tabStops() As Integer = {40, 140, 240} Call SendMessage(theList.Handle, LB_SETTABSTOPS, tabStops.Length, tabStops(0)) theList.Refresh() And then later on, I use this in a loop, where col1 through col4 are all string values for the columns: theList.Items.Add(col1 & vbTab & col2 & vbTab & col3 & vbTab & col4) But no matter what I use for the values of tabStops, the list is formatted with standard width tab stops.

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• Start Default Browser - Windows

  - by dbasnett

  When starting the default browser like this: Dim trgt1 As String = "http://www.vbforums.com/showthread.php?t=612471" pi.FileName = trgt1 System.Diagnostics.Process.Start(pi) It takes about 40 seconds to open the page. If I do it like this, though this isn't the default browser Dim trgt1 As String = "http://www.vbforums.com/showthread.php?t=612471" pi.Arguments = trgt1 pi.FileName = "iexplore.exe" 'or firefox.exe System.Diagnostics.Process.Start(pi) it opens immediately. Is this a bug or a feature? I have tried this with both IE and FireFox set to be the default browser.

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• Not getting correct time from UniversalDateTime

  - by Nakul Chaudhary

  I send a vcal through mail in web application with convert datetime to universal datetime. If i run web application locally (local sevser in India) i get correct time in my vcal. But run appication live (server in US) then not get corret time with a difference of 1 and half hour.Please suggest me. code : Dim result As StringBuilder = New StringBuilder() result.AppendFormat("BEGIN:VCALENDAR{0}", System.Environment.NewLine) result.AppendFormat("BEGIN:VEVENT{0}", System.Environment.NewLine) result.AppendFormat("SUMMARY:{0}{1}", subject, System.Environment.NewLine) result.AppendFormat("LOCATION:{0}{1}", location, System.Environment.NewLine) result.AppendFormat("DTSTART:{0}{1}", startDate.ToUniversalTime().ToString("yyyyMMdd\THHmmss\Z"), System.Environment.NewLine) result.AppendFormat("DTEND:{0}{1}", endDate.ToUniversalTime().ToString("yyyyMMdd\THHmmss\Z"), System.Environment.NewLine) result.AppendFormat("DTSTAMP:{0}{1}", DateTime.Now.ToUniversalTime().ToString("yyyyMMdd\THHmmss\Z"), System.Environment.NewLine) result.AppendFormat("DESCRIPTION:{0}{1}", description, System.Environment.NewLine) result.AppendFormat("END:VEVENT{0}", System.Environment.NewLine) result.AppendFormat("END:VCALENDAR{0}", System.Environment.NewLine) Return result.ToString()

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• How to check a SQL database table to see if a record exists

  - by Anthony

  I have a SQL database that creates a record for every document uploaded by the user to the server. I want to check this table before a user uploads a document to ensure they don't upload a file with name that already exists. I know how to make the connection and make the SqlCommand to query the table for an existing record. But I don't know how to check the record count from the sqlCommand I made. Does that make sense? Using myConnectionCheck As New SqlConnection(myConnectionStringCheck) Dim myCommandCheck As New SqlCommand() myCommandCheck.Connection = myConnectionCheck myCommandCheck.CommandText = "SELECT * FROM Req_Docs WHERE Doc_Name =" & DocName myConnectionCheck.Open() myCommandCheck.ExecuteNonQuery() End Using Thanks in advance, Anthony

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• Custom Format in Crystal Report !

  - by nwaynge

  How can i format quantity value in crystal report like if the value is 5, then just show as 5. If the value is 5.25, then show as 5.25. So which format should i use for that? Thanks.

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• how do i return arraylist from a function?

  - by KoolKabin

  Hi guys, I learnt example from msdn to populate a listbox control with arraylist. http://msdn.microsoft.com/en-us/library/1818w7we(v=VS.100).aspx I want to create a function which will give return the USStates arraylist and use the returned value as datasource for listbox1 Dim USStates As New ArrayList() USStates.Add(New USState("Alabama", "AL")) USStates.Add(New USState("Washington", "WA")) USStates.Add(New USState("West Virginia", "WV")) USStates.Add(New USState("Wisconsin", "WI")) USStates.Add(New USState("Wyoming", "WY")) ListBox1.DataSource = USStates ListBox1.DisplayMember = "LongName" ListBox1.ValueMember = "ShortName I tried creating a function like: Public Shared Function FillList() As ArrayList() Dim USStates As New ArrayList() USStates.Add(New USState("Alabama", "AL")) USStates.Add(New USState("Washington", "WA")) USStates.Add(New USState("West Virginia", "WV")) USStates.Add(New USState("Wisconsin", "WI")) USStates.Add(New USState("Wyoming", "WY")) return usstates end function but it says error: Value of type 'System.Collections.ArrayList' cannot be converted to '1-dimensional array of System.Collections.ArrayList'.

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• dynamic ul with sub-levels

  - by Y.G.J

  i have this recursive code <ul> <% sql="SELECT * FROM cats ORDER BY orderid " rs.Open sql,Conn dim recArray If Not rs.EOF Then recArray = rs.getRows() dim i for i=0 to uBound(recArray,2) if recArray(1,i)=0 then call showMessage(i) end if next End If function showMessage(index) %><li><%=recArray(2,index)%></li><% for a=0 to uBound(recArray,2) if recArray(1,a) = recArray(0,index) Then %><ul><% call showMessage(a) %></ul><% end if next %></li><% end function %> </ul> inside the loop in the function i have the for the sub(s) but after each line of li it will close the ul how can i have that dynamic and to have the output like this <ul> <li></li> <li></li> <li> <ul> <li></li> <li></li> <li></li> </ul> </li> <li></li> </ul> and not like this <ul> <li></li> <li></li> <li> <ul><li></li></ul> <ul><li></li></ul> <ul><li></li></ul> </li> <li></li> </ul>

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• Handling events from user control containing a WPF textbox

  - by Tom

  I've been successful in putting a WPF textbox into an existing windows form using ElementHost and a user control. It looks like the following: Public Class MyUserControl Private _elementHost as ElementHost = New ElementHost Private _wpfTextbox as System.Windows.Controls.Textbox = New System.Windows.Controls.Textbox Public Sub New() Me.Controls.Add(_elementHost) _elementHost.Dock = DockStyle.Fill _elementHost.Child = _wpfTextbox _wpfTextbox.SpellCheck.IsEnabled = True End Sub End Class Now, when I put this user control onto a windows form, it accepts keyboard input and the form itself can get text from the textbox. However, when I try to handle keypress (or keydown, keyup) events from the user control, nothing happens. I've looked into this problem and did a bit of research but now I'm a little confused as to what I really need to be looking at. The following are the topics that I am somewhat confused about. HwndSource Relaxed delegates WPF routed events If I am interpreting everything correctly, input from WPF textboxes are handled differently compared to regular form textboxes. It seems like both aren't compatible with each other but there must be some way to "pass" keys from one to another? I'd appreciate any help.

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• Object Naming without Hungarian?

  - by EdOxH

  Mostly because of reading this site, I'm trying to move away from Hungarian Notation. Or I guess the improper (system) Hungarian. I can figure out a better way to name most data types, but I don't know what to do with objects. What would be a good naming convention for objects? I use objRS for recordsets now. Would I just use rs?

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• getting the name of the calling method

  - by zeocrash

  Basically i've got a web service that i'm trying to put some kind of usage logging in. To do this i've created a class with a logging method. I instatiate the class on the service and then call the logging method in each of the web methods. I'm trying to find a way of getting the name of the method that has called the loggong method Public sub tstmethod log_object.log_method end sub in this case the returned name i'm looking for is "tstmethod" Everywhere i've seen has said to either use Dim stackframe As New Diagnostics.StackFrame Return stackframe.GetMethod.Name.ToString Or to use Dim stackframe As New Diagnostics.StackFrame Return stackframe.GetMethod.DeclaringType.FullName which i call inside the logging method getmethod.name.tostring returns the name of the logging method getmethod.declaringtype.fullname returns the name of the logging class no matter what i do i cannot find a way of getting the name of the method that called the logging method in this case "tstmethod"

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• What would be a good system for selling technical books online?

  - by WeNeedAnswers

  If you had a choice, how would you like to read technical books and what would be an incentive?

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• Read Resources from a dll

  - by Ramiz Uddin

  Hi, I've two VB7 projects - one is console project and another is winform project. In console project, I've defined some strings in the project resources (project properties Resources tab). I build that console project and get the dll from debug folder and added up as a reference in my winforms project. Now, I need to read those strings from the referenced dll. How? Thanks.

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• dataset tables row count 'zero'

  - by James123

  I am using dataadapter.Fill() into dataset. But dataset returning tables rows count zero (0). When I ran same sp in sql mgmt. It is returning two tables data. If attributeId = 1 Then spString = "USP_group_1" ElseIf attributeId = 2 Then spString = "USP_group_2" ElseIf attributeId = 3 Then spString = "USP_group_3" End If sqlcmd_q.CommandTimeout = 120 sqlcmd_q.Connection = sqlCnn sqlcmd_q.CommandText = spString sqlcmd_q.CommandType = CommandType.StoredProcedure sqlcmd_q.Parameters.AddWithValue("@client_id", clientId) Try sqlCnn.Open() Dim daGrid As New SqlDataAdapter(sqlcmd_q) daGrid.Fill(dsGrid) daGrid.Dispose() Return dsGrid I don't understand why this happening?

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• Disable proxy for entire application?

  - by Brent

  Ever since upgrading to Visual Studio 2010, I'm running into an issue where the first web request of any type (WebRequest, WebClient, etc.) hangs for about 20 seconds before completing. Subsequent calls work quickly. I've narrowed down the problem to a proxy issue. If I manually disable proxy settings, I don't experience this delay: Dim wrq As WebRequest = WebRequest.Create(Url) wrq.Proxy = Nothing What's strange is that there are no proxy settings enabled on this machine in Internet Options. What I'm wondering is if there is a way to disable proxy settings for my entire project in one shot without explicitly disabling as above for every web object. The main reason I want to be able to do this is that I'm trying to use an API (http://code.google.com/p/google-api-for-dotnet/) which uses web requests, but does not provide any way to manually disable proxy settings. I have found some information suggesting that I need to add some proxy information to the app.config file, but I get errors building my program if I make an edits to that file. Can anyone point me in the right direction?

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• Automating Visual Studio 2010 from a console app

  - by JoelFan

  I am trying to run the following code (which I got from here). The code just creates a new "Output" pane in Visual Studio and writes a few lines to it. Public Sub WriteToMyNewPane() Dim win As Window = _ DTE.Windows.Item(EnvDTE.Constants.vsWindowKindOutput) Dim ow As OutputWindow = win.Object Dim owPane As OutputWindowPane Dim cnt As Integer = ow.OutputWindowPanes.Count owPane = ow.OutputWindowPanes.Add("My New Output Pane") owPane.Activate() owPane.OutputString("My text1" & vbCrLf) owPane.OutputString("My text2" & vbCrLf) owPane.OutputString("My text3" & vbCrLf) End Sub Instead of running it as a Macro, I want to run it as an independent console application that connects to a currently running instance of Visual Studio 2010. I'm having a hard time figuring out how to set the value of DTE. I think I may need to call GetActiveObject, but I'm not sure how. Any pointers?

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• Get a random character from a string.

  - by VBeginner

  I need to get a random character out of a string. Thanks.

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• In Visual Studio 2010, can you auto-generate an eventhandler in the same way as C#, using Visual Bas

  - by SLC

  For example, you can type this.Loaded += in C# and press TAB a couple of times to automatically generate an event handler. Is there an equivelent in Visual Basic? Typing Addhandler Me.Loaded and pressing TAB or RETURN does nothing.

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• Delegates and ParamArray - Workaround Suggestions?

  - by M.A. Hanin

  Some predefined methods contain a ParamArray in their signature. Delegates, however, cannot contain a ParamArray in their signature. Main question: Assume you wish to create a delegation mechanism for a specific method which requires a ParamArray. How would you work around this constraint? "Bonus" question: Assume you wish to create a generalized delegation mechanism for all methods which require ParamArray, how would you do that?

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• conversion of a varchar to a smalldatetime results in an out-of-range value

  - by michael

  The code: strSql = "insert into table2 (transactiondate) values ('" & transactiondate & "')" seems to be giving me the runtime error: The conversion of a varchar data type to a smalldatetime data type resulted in an out-of-range value In the code, strSql is a String object and transactiondate is a Date object. In the SQL database however, transactiondate is a smalldatetime object. I've tried changing the smalldatetime to a datetime (in the database) and I've tried transactiondate.toString() but with no success. How can this be fixed? Note: I know about the dangers of inline SQL. I am looking for a quick fix solution here and not a discussion about SQL injection.

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• What is wrong with this Anonymous Object Initializate Syntax?

  - by Ramiz Uddin

  What is wrong with this Anonymous Object Initialize syntax? If (Not row Is Nothing) Then Dim info As New CultureInfo(Conversions.ToString(row.Item("cultureId"))) With { _ .NumberFormat = New With {.CurrencySymbol = Conversions.ToString(row.Item("symbol")), .CurrencyGroupSeparator = Conversions.ToString(row.Item("thousSep")), .CurrencyDecimalSeparator = Conversions.ToString(row.Item("thousSep")), .CurrencyDecimalDigits = Conversions.ToInteger(row.Item("decimals")), .NumberGroupSeparator = Conversions.ToString(row.Item("thousSep")), .NumberDecimalSeparator = Conversions.ToString(row.Item("thousSep")), .NumberDecimalDigits = Conversions.ToInteger(row.Item("decimals"))}} } hashtable.Add(key, info) End If It is a syntax error or object initialization type casting issue. Thanks.

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