ComponentOne InputPanel for WinForms
ErrorText Property
Example 

C1.Win.C1InputPanel.4 Assembly > C1.Win.C1InputPanel Namespace > InputComponent Class : ErrorText Property
Gets or sets an error description string with optional HTML tags.
Syntax
'Declaration
 
Public Overridable Property ErrorText As System.String
public virtual System.string ErrorText {get; set;}
Remarks

Setting this property to a non-empty string causes the component to be highlighted. The message is displayed as a tooltip when the user moves the mouse over the component.

Setting this property to an empty string removes the higlight and restores the original tooltip text (ToolTipText).

Example
The example below uses the Validating event to set the error property on an InputNumericBox when the value entered is not an even number.
private void inputNumericBox1_Validating(object sender, CancelEventArgs e)
{
    if (inputNumericBox1.Value % 2 != 0)
    {
        inputNumericBox1.ErrorText = 
            "Please enter an <b>even</b> number!";
        e.Cancel = true;
    }
    else
    {
        inputNumericBox1.ErrorText = string.Empty;
    }
}
See Also

Reference

InputComponent Class
InputComponent Members