How we can force all the validation controls to run?

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The Page.Validate() method is used to force all the validation controls to run and to perform validation.

In ASP.NET, to force all validation controls to run, you can call the Page.Validate() method. This method validates all of the validation controls on the page, regardless of whether their Enabled property is set to true or false. After calling Page.Validate(), you can check the Page.IsValid property to determine if all the validation controls passed validation.

Here’s a sample code snippet demonstrating this:

csharp
protected void btnSubmit_Click(object sender, EventArgs e)
{
// Force validation of all validation controls
Page.Validate();

// Check if all validation controls passed validation
if (Page.IsValid)
{
// All validations passed, proceed with your logic
// For example, save data to the database
}
else
{
// At least one validation failed, handle the error or display error messages
}
}

Calling Page.Validate() is a common practice before performing any server-side action that depends on the validity of user input. It ensures that all validation rules defined in the validation controls are evaluated before proceeding further.