vb.net

问题 In my Form I have various Textboxes that I write into with an in Form keyboard I created using Buttons. I have this code in Form.Load, which uses an event handler to determine which Textbox has the Focus: For Each control As Control In Me.Controls If control.GetType.Equals(GetType(TextBox)) Then Dim textBox As TextBox = control AddHandler textBox.Enter, Sub() FocussedTextbox = textBox End If Next Then I use this on each button to write a specific character: Private Sub btnQ_Click(sender As

问题 In my Form I have various Textboxes that I write into with an in Form keyboard I created using Buttons. I have this code in Form.Load, which uses an event handler to determine which Textbox has the Focus: For Each control As Control In Me.Controls If control.GetType.Equals(GetType(TextBox)) Then Dim textBox As TextBox = control AddHandler textBox.Enter, Sub() FocussedTextbox = textBox End If Next Then I use this on each button to write a specific character: Private Sub btnQ_Click(sender As

问题 I have a bunch of related VB.NET console applications I've written for admin/management functions. I now want to bring them together under a single Windows Forms application that works as a launcher, but instead of launching the apps as seperate programs, I want to embed the apps in the windows forms app, e.g. have a scrollable list of icons down the left hand side - clicking on one will launch the associated .exe in the right hand pane of the windows forms app. For now I have a simple single

问题 In my program, I have a datagridview that is bound to a datatable using a binding source. What I would like to accomplish to be able to sort the datagridview by a column using a natural string sort. Sample Column Data: XAB-1 XAB-2 XAB-11 XAB-3 XAB-1A XAB-10 XAB-1B Desired Result: XAB-1 XAB-1A XAB-1B XAB-2 XAB-3 XAB-10 XAB-11 I have tried using the datagridview.sort method passing in a natural string Icomparer, but the sort function cannot be used when the datagridview is databound. I have

问题 In my program, I have a datagridview that is bound to a datatable using a binding source. What I would like to accomplish to be able to sort the datagridview by a column using a natural string sort. Sample Column Data: XAB-1 XAB-2 XAB-11 XAB-3 XAB-1A XAB-10 XAB-1B Desired Result: XAB-1 XAB-1A XAB-1B XAB-2 XAB-3 XAB-10 XAB-11 I have tried using the datagridview.sort method passing in a natural string Icomparer, but the sort function cannot be used when the datagridview is databound. I have

问题 In my program, I have a datagridview that is bound to a datatable using a binding source. What I would like to accomplish to be able to sort the datagridview by a column using a natural string sort. Sample Column Data: XAB-1 XAB-2 XAB-11 XAB-3 XAB-1A XAB-10 XAB-1B Desired Result: XAB-1 XAB-1A XAB-1B XAB-2 XAB-3 XAB-10 XAB-11 I have tried using the datagridview.sort method passing in a natural string Icomparer, but the sort function cannot be used when the datagridview is databound. I have

问题 In my program, I have a datagridview that is bound to a datatable using a binding source. What I would like to accomplish to be able to sort the datagridview by a column using a natural string sort. Sample Column Data: XAB-1 XAB-2 XAB-11 XAB-3 XAB-1A XAB-10 XAB-1B Desired Result: XAB-1 XAB-1A XAB-1B XAB-2 XAB-3 XAB-10 XAB-11 I have tried using the datagridview.sort method passing in a natural string Icomparer, but the sort function cannot be used when the datagridview is databound. I have

问题 I'm using this code to filter my datatable by dataview: Dim xBlockedAccounts As String = "1,5,7" Dim xDv_AllAcc As New DataView(MyVar_Dt_Accounts) xDv_AllAcc.RowFilter = "FIND_IN_SET(AccID," & xBlockedAccounts & ")" Me.Dgv3.DataSource = xDv_AllAcc.ToTable but it gives me that: The expression contains undefined function call FIND_IN_SET().' how I can use FIND_IN_SET function with Rowfilter of Dataview? 回答1: I assumed MyVar_Dt_Accounts was a DataTable . You need to have an array of blocked

问题 I'm using this code to filter my datatable by dataview: Dim xBlockedAccounts As String = "1,5,7" Dim xDv_AllAcc As New DataView(MyVar_Dt_Accounts) xDv_AllAcc.RowFilter = "FIND_IN_SET(AccID," & xBlockedAccounts & ")" Me.Dgv3.DataSource = xDv_AllAcc.ToTable but it gives me that: The expression contains undefined function call FIND_IN_SET().' how I can use FIND_IN_SET function with Rowfilter of Dataview? 回答1: I assumed MyVar_Dt_Accounts was a DataTable . You need to have an array of blocked

问题 I'm using this code to filter my datatable by dataview: Dim xBlockedAccounts As String = "1,5,7" Dim xDv_AllAcc As New DataView(MyVar_Dt_Accounts) xDv_AllAcc.RowFilter = "FIND_IN_SET(AccID," & xBlockedAccounts & ")" Me.Dgv3.DataSource = xDv_AllAcc.ToTable but it gives me that: The expression contains undefined function call FIND_IN_SET().' how I can use FIND_IN_SET function with Rowfilter of Dataview? 回答1: I assumed MyVar_Dt_Accounts was a DataTable . You need to have an array of blocked