private string GetErrorMessage(Control control)
{
// Get the properties for this control.
ProvidedProperties properties = (ProvidedProperties)m_providedProperties[control];
string displayName = properties.DisplayName.Length == 0 ? control.Name : properties.DisplayName;
string value = control.Text;
// Check against required.
if (value.Length == 0)
{
if (properties.Required)
{
return(displayName + " is required.");
}
else
{
return(string.Empty);
}
}
// Validate that the text can be converted to the type.
try
{
TypeConvert.ToType(value, properties.PrimitiveType);
}
catch (Exception)
{
return("The text cannot be converted to the '" + properties.PrimitiveType.ToString() + "' type.");
}
// Validate the regular expression.
if (properties.RegularExpression.Length > 0)
{
if (!Regex.IsMatch(value, properties.RegularExpression))
{
return("The text is not of the correct format.");
}
}
// All tests passed.
return(string.Empty);
}
private ProvidedProperties GetProperties(Control control)
{
if (m_providedProperties.Contains(control))
{
return((ProvidedProperties)m_providedProperties[control]);
}
else
{
ProvidedProperties properties = new ProvidedProperties();
m_providedProperties.Add(control, properties);
control.Validating += new CancelEventHandler(ValidatingHandler);
control.KeyUp += new KeyEventHandler(CheckOnKeystrokeHandler);
return(properties);
}
}
