Vb net datagridview cellvalidating change value
So basically if they put data in row 0 – column 0, I want to ensure that row 0 – column 1, row 0 – column 2 and so on... I need this for validation reasons before this will be committed to the database. If the fields are not all filled in for that row, I want to display a message containing the rows that need to be fixed. Here's an update, I have figured out what needed to be done. Text = "Data Grid View validation demo (disallows empty Company Name)" End Sub Private Sub Form1_Load(By Val sender As System. All Cells Except Header) End Sub Private Sub data Grid View1_Cell Validating(By Val sender As Object, _ By Val e As Data Grid View Cell Validating Event Args) _ Handles data Grid View1. Header Text ' Abort validation if cell is not in the Company Name column. Equals("Company Name") Then Return ' Confirm that the cell is not empty. Load ' Initialize the Binding Source and bind the Data Grid View to it. Data Source = Get Data("select * from Customers") Grid View1. Auto Resize Columns( _ Data Grid View Auto Size Columns Mode. Update Balance() End Sub Private Sub Update Balance() Dim counter As Integer Dim balance As Integer Dim deposit As Integer Dim withdrawal As Integer ' Iterate through the rows, skipping the Starting Balance Row. Value Is Nothing Then ' Verify that the cell value is not an empty string.
In the case of check box cells, however, you will typically want to handle the change immediately.
This, therefore, undoes any action you perform in the handler.
What you have to do instead is change the value in the editing control (remembering not to cancel the event).
private void Data Grid View1_Cell Value Changed( object sender, Data Grid View Cell Event Args e) private void Data Grid View1_Rows Removed( object sender, Data Grid View Rows Removed Event Args e) private void Update Balance() Private Sub Cell Value Changed(By Val sender As Object, _ By Val e As Data Grid View Cell Event Args) _ Handles Data Grid View1.
Cell Value Changed ' Update the balance column whenever the values of any cell changes.