Friday, September 7, 2018

File Upload Validation

if (FileUpload1.HasFile)
        {
            string extension = System.IO.Path.GetExtension(FileUpload1.FileName);

            if (extension == ".jpg" || extension == ".jpeg" || extension == ".JPG" || extension == ".JPEG")
            {


                SaveFile(FileUpload1.PostedFile);

            }
            else
            {
               

                ScriptManager.RegisterStartupScript(this, this.GetType(), "alertmessage", "javascript:alert('Only .Jpg File allowed')", true);

               
            }

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JAVA SCRIPT POPUP C#

 ScriptManager.RegisterStartupScript(this,this.GetType(),"Popup","alert('Welcome to NRsolution4u!');",true);