validation in form

Question

what is the code to validate user in making form such that textbox only accept 10 integers as phone no.???

Dipankar Biswas · Answer

errorProvider control.. example http://www.c-sharpcorner.com/UploadFile/DipalChoksi/UsingErrorProviderContolinWindowsFormsandCSharp11242005010829AM/UsingErrorProviderContolinWindowsFormsandCSharp.aspx ErrorProvider . SetError Method http://msdn.microsoft.com/en-us/library/system.windows.forms.errorprovider.seterror(v=vs.110).aspx

JUKE BOX · Answer

do i have to use any namespace for using Errorprovider.SetError Keyword??? on compiling it gives error - An object reference is required for non-static feild

Dipankar Biswas · Answer

Here we have discuss about the TextBox Validationfor that TextBox takes The Only indian Format Phnumberfor that here is the code for itand also we have to using one more Namespace is using System.Text.RegularExpressions; Code for Indian Formate Phone Number: this code write in the txtPhnumbr_Validating Event Regex phNum = new Regex(^\+[9][1][-][\d]{10}$); Match getmatch = phNum.Match(textBox1.Text); if (getmatch.Success) { errorProvider1.SetError(this.textBox1 ); } else { errorProvider1.SetError(this.textBox1 Phnum Should 10 Digits and Format +91-XXXXXXXXXX); } See this link.. http://dotntcode.blogspot.in/2012/11/how-to-validate-textbox-with-indian.html