Control Validation in C#.net

Naraayanan
Posted by Naraayanan under C# category on | Points: 40 | Views : 1793
Step by step to Control Validation:
Add a Form
Go to Form Property window.
Disable AutoValidate .

Add a Text Box in the Form.
Add a Button in the Form.
Verify CausesValidation is true.

The following code add into Validating Event of TextBox and Click event of Button.

Click Event of Button:
 if (this.ValidateChildren())
{
MessageBox.Show("Validation succeeded!");
}
else
{
MessageBox.Show("Validation failed.");
}

TextBox Validating Event:
  if (textBox1.Text.Length == 0)
{
e.Cancel = true;
}
else
{
e.Cancel = false;
}

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