sql server 2008 - How to check if the value is not null and if not then the value should be displayed in Textbox in ASP.NET -

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this code

sqlconnection con = new sqlconnection(cs);         con.open();         string query = "select name t_identities branchid = '" + branchidtext.text + "' , accountid = '" + accountidtext.text + "'";         sqlcommand cmd = new sqlcommand(query, con);         string value = cmd.executescalar().tostring();          if (value != null)         {             nametext.text = value.tostring();         }          else         {             nametext.text = "no records found";         }      }

if query returs null textbox should return no records found or else should display name generated query in text box. please help.

probably getting error in line

string value = cmd.executescalar().tostring();

as trying convert null value string. better use convert.tostring(cmd.executescalar()) handle case.

your if/else block ok


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