Adding Custom Error Checking to C1TrueDBGrid

True DBGrid for WinForms

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True DBGrid for WinForms Task-Based Help > Adding Custom Error Checking to C1TrueDBGrid

C1TrueDBGrid displays a message for any errors that occur when building a project. You must switch off the internal error handling.

Complete the following steps:

To do this, set the Handled property to True in the Error event of the grid. It will switch off the grid's built-in error checking:

To write code in Visual Basic

Visual Basic	Copy Code
Private Sub C1TrueDBGrid1_Error(ByVal sender As Object, ByVal e As C1.Win.C1TrueDBGrid.ErrorEventArgs) Handles C1TrueDBGrid1.Error e.Handled = True End Sub

To write code in C#

C#	Copy Code
private void c1TrueDBGrid1_Error(object sender, C1.Win.C1TrueDBGrid.ErrorEventArgs e) { e.Handled = true; }

You can then add your own error-handling code. For example:

To write code in Visual Basic

Visual Basic	Copy Code
Private Sub C1TrueDBGrid1_Error(ByVal sender As Object, ByVal e As C1.Win.C1TrueDBGrid.ErrorEventArgs) Handles C1TrueDBGrid1.Error If C1TrueDBGrid1.Columns(C1TrueDBGrid1.Col).DataField = "CategoryID" Then e.Handled = True MessageBox.Show("Your User Friendly Message") Else e.Handled = False MessageBox.Show("Enter a string") End If End Sub

To write code in C#

C#	Copy Code
private void c1TrueDBGrid1_Error(object sender, C1.Win.C1TrueDBGrid.ErrorEventArgs e) { if (c1TrueDBGrid1.Columns[c1TrueDBGrid1.Col].DataField == "CategoryID") { e.Handled = true; MessageBox.Show("Your User Friendly Message"); } else { e.Handled = false; MessageBox.Show("Enter a string"); } }