Private Sub Datagrid1_Cell Validating(By Val sender As Object, By Val e As System. Private Sub Datagrid1_Cell Validating(By Val sender As Object, By Val e As System.
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In your example, you use the Cell Validating event, as shown below: Here, you want to ensure that the length of the new Customer ID is at least five characters.
You do this by using the Formatted Value property of the Data Grid View Cell Validating Event Args parameter.
This property returns the new value entered in the cell.
If it is less than five characters, you set the Error Text property of that cell to some error message.
Notice how the Column Index and Row Index properties of Data Grid View Cell Validating Event Args parameter are used.
At run time, if the validation fails, the Data Grid View displays a red exclamation icon in that cell (see below).
Its not permissible to have the two selected to true, but they can both be false.
I wrote code in the cellvalidating event as follows. Data Grid View Cell Validating Eve nt Args) Handles Datagrid1.
Is In Edit Mode Then Dim c As Control = Data Grid View1.