Write a program to check empty query string in asp .net

Solution:

protected void Page_Load(object sender, EventArgs e)
    {
        if (!string.IsNullOrEmpty(Request.QueryString.ToString()))
        {
            //--- This code will execute if query string is not null or not empty
        }
    }

Some useful resources:

1) Query String Example in Asp .Net

2) Query String multiple parameters Example in Asp .Net

3) Query String Encrypt Decrypt in asp .net