What is the wrong with my c# code -


error

server error in '/kibritak3' application.

invalid column name 'name'. invalid column name 'phone'.

description: unhandled exception occurred during execution of current web request. please review stack trace more information error , originated in code.

exception details: system.data.sqlclient.sqlexception: invalid column name 'name'. invalid column name 'phone'.

source error:

an unhandled exception generated during execution of current web request. information regarding origin , location of exception can identified using exception stack trace below.

stack trace: 

its come if write code  **  if (literal1.text == "data inserted successfully")         {             response.redirect("http://localhost:1038/kibritak3/companyhomepage.aspx");         }         else {             txtname.text = "";             txtemail.text = "";             txtphone.text = "";         }  ** , without evrything ok ------------------------- full code:     public void refress()     {         txtname.text = "";         txtemail.text = "";         txtphone.text = "";         txtlocation.text = "";         txthistory.text = "";     }         protected void imagebutton1_click(object sender, imageclickeventargs e)     {          sqlcommand cmd = new sqlcommand("insert com_info(name,email,phone,location,history) values('" + txtname.text + "','" + txtemail.text + "','" +txtphone.text+ "','" +txtlocation.text+ "','"+txthistory.text+"')", con);          cmd.commandtype = commandtype.text;          try         {              con.open();              cmd.executenonquery();              literal1.text = "data inserted successfully";              con.close();              refress();          }          catch (exception ex)         {              literal1.text = ex.message;          }         if (literal1.text == "data inserted successfully")         {             response.redirect("http://localhost:1038/kibritak3/companyhomepage.aspx");         }         else {              txtname.text = "";             txtemail.text = "";             txtphone.text = "";         }     } }

please verify attributes of database once. or not include attributes of table in query.

sqlcommand cmd = new sqlcommand("insert com_info values('" + txtname.text + "','" + txtemail.text + "','" +txtphone.text+ "','" +txtlocation.text+ "','"+txthistory.text+"')", con);


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