how to increase value of student id

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Hi, I am new in c sharp, working on windows application where i need to increase student id automatically in database. And it should come directly in combo box when i open the particular form to add data, related to student.

thanks in advance.

Posted 2-Nov-11 21:47pm

mkcm2011

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lukeer · Answer 1 · 2011-11-02T22:00:00

Solution 2

Your database management software should be able to set the ID column to AutoIncrement. You can then create a new data row and let the database provide the ID. After that, you re-read and change what is necessary but leave ID untouched at all times.

Posted 2-Nov-11 22:00pm

lukeer

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mkcm2011 3-Nov-11 4:35am

i am working on sql server 2005 and AutoIncrement is not available there.

sahabiswarup · Answer 2 · 2011-11-02T21:59:00

C#

public string SlNo(string tblName, string colName, string srchCodn, Page form)
    {
        string functionReturnValue = null;
        try
        {
            string sqlQuery = "select max(" + colName + ") + 1 from " + tblName;
            if (srchCodn != "")
                sqlQuery += " " + srchCodn;
            adp = new SqlDataAdapter(sqlQuery, conn);
            tbl = new DataTable();
            adp.Fill(tbl);
            if (tbl.Rows.Count == 0 | tbl.Rows[0][0].ToString() == "")
                functionReturnValue = Convert.ToString(1);
            else
                functionReturnValue = tbl.Rows[0][0].ToString();
            tbl.Dispose();
            adp.Dispose();
        }
        catch (Exception ex)
        {
            MsgBox("Serial No Error: " + ex.Message, form);
            return "";
        }
        return functionReturnValue;
    }