Dropdown list validation

Jaya Prakash

This Is my dropdown data getting from db

void GetQualification()
{
    con.Open();
    SqlDataAdapter da = new SqlDataAdapter("sp_GetQ", con);
    DataSet ds = new DataSet();
    da.Fill(ds);
    DropDownList1.DataSource = ds;
    DropDownList1.DataTextField = "cname";
    DropDownList1.DataValueField = "cname";
    DropDownList1.DataBind();
    DropDownList1.Items.Insert(0, "Select Qualification");
    con.Close();
}

How can i validate through asp.net or

this is my javascript code validation for dropdown is not working pls help me

<%@ Page Title="" Language="C#" MasterPageFile="~/Site1.Master" AutoEventWireup="true" CodeBehind="Registration.aspx.cs" Inherits="MasterLogin.Registration" %>

    
    


    
         Back To Menu
        
            
            
        
        
            
            
        
        
            
            
        
        
            
            
        
        
            
            
        
        
            
            
        
        
            
            
        
        
            
            
        
        
            
            
        
        
            
            
        
        
            
            
        
        
            
            
        
    First Name 
                
            
Last Name 
                
            
DoB 
                
            
Gender 
                
  
                
            
Qualification 
                
                
            
State 
                
                
            
City 
                
                
            
Address Proof 
               
                
                         
                         
                   
  
                
            
Password

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Naimish Makwana3y ago
Accepted answer
You can add asp:RequiredFieldValidator validator.

Example:
Refere below link:

https://www.aspsnippets.com/Articles/Using-RequiredFieldValidator-for-DropDownList-in-ASPNet.aspx

Diptiranjan Sutar3y ago

Hello Jaya,

Please check below code for dropdownlist validation using RequiredFieldValidator.

Thanks,

Diptiranjan Sutar

Jaya Prakash3y ago
not working .. can u provide me in aspx.cs code sir
Naimish Makwana3y ago
Hello Jaya,

You can add below code in isValidfn() function.
```
if (DropDownList1.selectedIndex == 0 || DropDownList1.value == "") {
	alert('Please select a Qualification');
	return false;
}
```
Thanks

Naimish Makwana

First Name
Last Name
DoB
Gender
Qualification
State
City
Address Proof
Password