TypeValidationEventArgs.Message Property

 

Gets a text message describing the conversion process.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public string Message { get; }

Property Value

Type: System.String

A String containing a description of the conversion process.

The validation process entails converting the formatted user input to the type defined by the ValidatingType property. The Message property contains a text description of the conversion process. Message is primarily useful when conversion fails, as indicated by an IsValidInput property value of false.

The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the MaskedTextBox.TypeValidationCompleted event. This report helps you to learn when the event occurs and can assist you in debugging. To report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.

To run the example code, paste it into a project that contains an instance of type MaskedTextBox named MaskedTextBox1. Then ensure that the event handler is associated with the MaskedTextBox.TypeValidationCompleted event.

private void MaskedTextBox1_TypeValidationCompleted(Object sender, TypeValidationEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "Cancel", e.Cancel );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "IsValidInput", e.IsValidInput );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Message", e.Message );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ReturnValue", e.ReturnValue );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ValidatingType", e.ValidatingType );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "TypeValidationCompleted Event" );
}

.NET Framework
Available since 2.0
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