I am getting an unknown error when I access one of my datagridviews. I get this error when I go to the tabpage where there is this datagrid and also when I put my mouse cursor over it.I don't know how to fix this because I don't know which code cause it. When I step through everything is ok, this error occurs at run time but doesn't show where and doesn't even stop the program.
View 5 RepliesI was happilly programming a few hours when suddonly i get the next error and i have no clue how to solve it. I tried searching for duplicates in the .vbproj file, showing all files in the solution explorer and then deleting the .resource file etc. Nothing works what should i do?
This is the error:Error4The item "objDebugSantonInformationSystem.dlgProductionSettings.resources" was specified more than once in the "Resources" parameter. Duplicate items are not supported by the "Resources" parameter.SantonInformationSystem
I've been doing a lot of coding latley and I'm interested in some things that vb can do. I was wondering if vb has the ability to search a directory for a file or mutipule files within a folder. Like in dos I can do C:user*.* and I can get all files that have . in them. Is there a similer way to do this in VB, I don't think VB has a wildcard or I've not heard that it does so I'm comfused on how I would find a file if I didn't know the path.
View 2 RepliesI've created a dialog which I'd like to popup from any function or sub in any class or form that I have in a project. It would nice to have it work exactly like a messagebox except it's got a progressbar and a cancel button on it. It's job is to display the progress of other functions so it should just stay open until I close it or the user selects cancel.Now I've found many of the basic examples on the net and have got the dialog working exactly as they have shown it. The trouble is that the examples are using a counter or thread.sleep which simply adds +1 in the DoWork sub. In other words, it validates that a worker thread can update a progressbar but it's a closed loop that only exists in the dialog's class.The examples don't show how to call an unkown function in another class dynamically, they're simply a hard coded 1+1 in DoWork. To me it's not a real world example because it doesn't show how to plug into the dialog or get a communication stream from other classes and functions that are running and wanting to increment the progressbar.[code]
View 3 RepliesI am trying to populate a datagridview with the content of a text file.
the text file contents are as follows:
[Code].....
I get no error while building the project. The textline variables are being populated correctly.
i got this error in my code when the program runs i dont know what am i doing wrong Datagridview Default Error Dialog The Following exception ocurred in the datagridview System.InvalidOperationException: Binding Source cannot be its own data source.
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I'm woking in aprogram that read sms from phone and show them in datagrid.berfore I link the datagrid to the database it read the show the message fine in the datagrid but now it show Error message
the code for the form load Code:Dim con As OleDbConnection = New OleDbConnection("Provider=Microsoft.jet.oledb.4.0" & ";data source=" & Application.StartupPath & "SMS.mdb") Dim Mocmd As OleDbCommand = New OleDbCommand("Select * FROM TableMobinil", con) Dim myDA As OleDbDataAdapter = New OleDbDataAdapter(Mocmd) Dim myDataSet As DataSet = New DataSet()
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i use this to populate my datagridview:
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to replace this default dialog please handle dataerror event and the combos value then changes to the id of the job i select
I have a datagridview bound to a datatable. I update the datatable quickly and constantly (each row updated multiple times per second).
column value of particular row is updated manually by setting properties in the contained items..
DataGridView1.Rows(index).Cells("col1").Value = message
Error : Index was outside the bounds of the array.
I get an error on the last line of sub where I am trying to assign a combobox to a column which is a textbox.error:Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index[code]....
View 3 RepliesI have a DataGridView where Cell_Validating is being done. I have a Cancel button on my form that allows the user to exit out of the DataGridView changes. The problem is that if a cell was currently flagged as in error, I cannot exit and remove columns from the DataGridView. I get the following error: Operation did not succeed because the program cannot commit or quit a cell value change. Is there a way to cancel the validation once the focus has been removed from the DataGridView? Here is my Cell_Validating
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I am making a simple program.. i have a Form named frmmain that contained datagridview control named DataGridView1.. and another form named frminsert that contains two textbox controls named txtFname and txtLname and Button control named btinsert.. I want to pass the value from txtFname to the Datagridview column1 and the value of txtLname to the Datagridview column2 when I click the btinsert.
View 5 RepliesWhats the error in this line of code;
Dim irow As Integer
For irow = 0 To DataGrid1.Item.count = -1
N/B: In a datagridview this will be written as shown below which works fine;
Dim irow As Integer
For irow = 0 To Dgvoneoff.Rows.Count - 1
I wrote an application last year which has been running fine on an XP Pro machine since then. Recently I installed the application on a PC running Windows 7. I am now experiencing the following error[code]...
View 2 RepliesI am getting
IndexOutOfRangeException was unhandled
ON
Dim range As excel.Range = xlWorkSheet.Range("B2:" & alphabet(headerText.Length) & (items.Length + 2).ToString)
Imports excel = Microsoft.Office.Interop.Excel
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Private Sub AddRowToDG(ByVal TempDt As DataTable) )
Me.dg.DataSource = TempDt
end sub
i get errorObject reference not set to an instance of an object when i try to bind the dgits some times works fine and some times gives me errorladil
I'm getting the following error trying to update a SQL 2000 table from a DataGridView:
"Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information"
The pkClaim in the select is the key column. I don't know what I'm doing wrong here.[code]......
While dragging a table which has a primary key from the dataset in my project onto a form to create a datagridview I get an error. The tableadapter for the table has an Update command in it. This is the error:
An error occurred while performing the drop:Code generation for property 'UpdateOrder' failed.Error was: 'Type'Action.Action2DataSet TableAdapters.TableAdapterManager +UpdateOrderOption' is not available in the target framework.'
Given that the tableadapter has an update command in it (which I did not change) .
I am using VB 2008 Version On the Immedate window Showing below meaages
?DGV(2, 1).Value
{System.Windows.Forms.DataGridViewTextBoxCell}
System.Windows.Forms.DataGridViewTextBoxCell: {System.Windows.Forms.DataGridViewTextBoxCell}
I am tryng the function Len(DGV(2, 1).Value), it gives error
i have this code i want to populate datatable with datagrid. . . .but this is error in column name i dont know why. . . .
Dim dt As New DataTable
Dim rptdoc As ReportDocument
With dt
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the next issue, that is only shown when the server is a Windows server 2008 machine , this is the information that I've found
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I imported an app from vb6 to vb.net It works fine. It has one axmsflexgrid control. Now I want to add another axmsflexgrid control in the same app. I tried to copy and paste from one frame (groupbox) to another and got this error:
"An error occurred while processing this command: Exception from HRESULT:0x800A018A (CTL_E_GETNOTSUPPORTED)"
An inputs on how would I fix this? Or just make a new axmsflexgrid?
I may have missed the solution to this problem, but in my database I have 2 columns that cannot be null and a system.NoNullAllowedException message is displayed if they are mt. I want to change this message to simply indicate that the cell cannot be null, instead of the huge message with all of the information which is of no use to the user. I cannot seem to find where to change this message. When the exception is thrown I would like to see the message say something like "Empty cell not allowed".
View 19 RepliesI have a datgridview with a checkbox that keeps giving me an error. I have checked the data type in SQL(2008) table and I have it set to CHAR(1), NULL = Y, Default value = ('N'). Image attached that shows the error.
The data loads into the grid except for the checkbox state (checked - not checked)Here is my bindings and add column section. Note: The grid will only display info. Text boxes and a checkbox above the grid will actually be the input source.
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I have a d.g.v. with two columns. One is set as date and the other is set as decimal. If there is a row and a number is typed in the decimal column, you can delete it and leave the cell empty. However, the program will not let me delete the contents of a date cell and leave it empty. It just gives me the default error dialog saying that I need to put the contents in proper date form and it doesn't let me leave it blank.
How can I make it so that it allows me to leave the cell blank?
I am trying to delete a row if the program finds a duplicate entry.
View 3 RepliesI have a datagridview and all its columns are set to Double Datatype. The problem is when I changed the value of cell and try to sort the column, it shows me an error "Object must be of type Double." I check each cell but all its values are number and I can sort all the columns before I edit one cell. But when I tried to change the value of only one cell and sort the columns, the errors will show. Its weird because I only removed 1 digit of the cell value and I cant sort at all.
Code:
Dim col As New DataGridViewTextBoxColumn
col.ValueType = GetType(Double)
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I created a DataGridView called grid_LivingBenefits.Each time a cell is going to be edited, the program will validate that cell.Now, I have two subroutines that take care of that validation.these are: ValidateDataType() and ValidatePrimaryKey()
at the DataGridView CellBeginEdit, the program checks for which cell the user is editing.at the DatagridView CellEndEdit, the program calls the subroutines for validation. If an input is invalid, I want the program to show an errorProvider on that cell.I used MessageBoxes first to check whether the validations are working and I got no problem there. but when I tried to use errorprovider instead of a messagebox, there's a blue zigzag line under the grid_LivingBenefits.CurrentCell
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I use this code :
Private Sub TextBox1_DragDrop(ByVal sender As Object, _
ByVal e As System.Windows.Forms.DragEventArgs) Handles DataGridView1.DragDrop
If e.Data.GetDataPresent(DataFormats.Text) Then
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But when mouse hover to datagridview, the mouse symbol did not change. It should have to be Copy symbol but It did not. Please tell me why and how can i resolved it.
I have a custom datagridview. I have to set focus to the cell(0,0) of that datagridview when it got focus.I have tryed the following code:
Me.CustomDataGridView1.CurrentCell = Me.CustomDataGridView1(0,0)
in the GotFocus event of that datagridview.But when i run and try to enter some text in a cell, then press the DOWN button to go to the next cell but there is a NullReferenceException.