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.
It is always raised before the Cell Validated event, which is described in the next section.
Cell Validating gives you the power to stop the commit process on a cell level obeying some internal rules of your application. To String()) If new Value And here is how the error message is displayed: The Cell Validated event occurs when the cell has validated the new content.
They do not occur when the Rad Grid View loads data.
The Cell Validating event occurs always before the Cell Validated event when the edited cell is about to lose its focus.
Form Private With Events data Grid View1 As New Data Grid View() Private binding Source1 As New Binding Source() Public Sub New() ' Initialize the form.
Cell Validating Dim header Text As String = _ data Grid View1.
column, its value is tested for validity by checking that it is not empty.
Both Cell Validating and Row Validating events allow you to stop the commit process by setting the boolean property Is Valid to False.
The Cell Validating event occurs when a cell is about to commit new content.
Cancel = True End If End Sub Private Sub data Grid View1_Cell End Edit(By Val sender As Object, _ By Val e As System. Cell End Edit ' Clear the row error in case the user presses ESC. For more information, see Protecting Connection Information.
Data Grid View Cell Event Args) _ Handles data Grid View1. Using Windows Authentication (also known as integrated security) is a more secure way to control access to a database.
For example, it might not be allowed for a row to contain equal values in two specific columns as well as any other kind of relations between the values of a single row.