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Control Validation using C#.net

Posted By:Narayanan       Posted Date: June 26, 2012    Points: 40    Category: Windows Form Controls    URL: http://www.dotnetspark.com  

Here , I gave a step by step Processing of Validation of Controls in Windows Application.

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.

if (textBox1.Text.Length == 0)
                e.Cancel = true;
                e.Cancel = false;

     TextBox Validating Event:
  if (this.ValidateChildren())
                MessageBox.Show("Validation succeeded!");
                MessageBox.Show("Validation failed.");



Further Readings:


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