RequiredField Validation controls then execute TextChanged

Question

Hi Folks,

 

I have a webForm.aspx, it have textboxes, textbox is assosiated with fieldRequired validate control(RegularExpressionValidator,ReqiredFiledValidator) for general validations.

 but here i also required TextBox_TextChanged event for other validation so issue 

 

textbox_TextChanged event is executing before fieldRequiredvalidate controls(RegularExpressionValidator,ReqiredFiledValidator)

 

how to validate first  fieldRequiredvalidate controls if everything fine then allow to execute textBox_Textchanged even.

i just googled  and find blow link 

 https://forums.asp.net/t/1178403.aspx?How+to+stop+Textchanged+event+when+validator+is+fired+

 

my code.cs 

 

protected void TextBox1_TextChanged(object sender, EventArgs e)

{

if(!System.Text.RegularExpressions.Regex.IsMatch(TextBox1.Text,RegularExpressionValidator1))

{

Label2.Text = "from textChanged.";

}

}

 

error is: Can`t convert argument2 etc... 

Note: TextBox is validating with two Required control(regularExpression,fieldRequired) 

 

 

=> IsMatch(TextBox1.Text,Regular_Expression))

how to pass Regular_Expression..? or use regular_expression with RequiredFields Controls

 

please check above link for more details