I am get the error near the ("emp_firstname"); show this error message" argument 1: cannot convert from 'string' to 'int' how to fix that

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SqlDataReader reader = cmd.ExecuteReader();
                               
                while (reader.Read())
                {
                    string addStr = reader.GetString("emp_firstname");
                    comboBox1.Items.Add(addStr);
                }

What I have tried:

SqlDataReader reader = cmd.ExecuteReader();
                               
                while (reader.Read())
                {
                    string addStr = reader.GetString(emp_firstname);
                    comboBox1.Items.Add(addStr);
                }

Posted 19-Feb-18 16:54pm

2011999

Updated 19-Feb-18 18:25pm

v2

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Maciej Los · Answer 1 · 2018-02-19T21:31:00

Solution 2

Please, read MSDN documentation. Reader.GetString() method[^] expects integer value as a parameter, but you pass a string.

Posted 19-Feb-18 21:31pm

Maciej Los

2011999 · Answer 2 · 2018-02-19T18:25:00

SqlDataReader reader = cmd.ExecuteReader();
                               
                while (reader.Read())
                {
                    string addStr = reader.GetString("emp_firstname");
                    comboBox1.Items.Add(addStr);
                }

string addStr = reader.GetString(emp_firstname);
                    comboBox1.Items.Add(addStr);

insted of above code i am wrote below code i got expected result

comboBox1.Items.Add(reader["emp_fristname"].ToString());