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datatable

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  • M Malik1122

    i want to fill one datatable by another datatable but its not working. so plz help in solving this.

    B Offline
    B Offline
    Brij
    wrote on last edited by
    #2

    can you post your code?How are you doing this.

    Cheers!! Brij

    M 2 Replies Last reply
    0
    • M Malik1122

      i want to fill one datatable by another datatable but its not working. so plz help in solving this.

      V Offline
      V Offline
      Vimalsoft Pty Ltd
      wrote on last edited by
      #3

      Good Mornig Malik1122 We cant know what is the Problem until we see the code, another thing that can be easly done on the SQL. e.g

      INSERT INTO TABLE2
      SELECT COL1,COL2 FROM TABLE1
      WHERE COL1 IS NOT NULL

      Always try to keep the sql side in SQl , because these things can be achieve at ease that side than trying to loop through a datatable. Please explain clearly what is your problem.

      Vuyiswa Maseko, Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers." C#/VB.NET/ASP.NET/SQL7/2000/2005/2008 http://www.vuyiswamaseko.somee.com http://www.vuyiswamaseko.tiyaneProperties.co.za vuyiswa@its.co.za http://www.itsabacus.co.za/itsabacus/

      M 1 Reply Last reply
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      • B Brij

        can you post your code?How are you doing this.

        Cheers!! Brij

        M Offline
        M Offline
        Malik1122
        wrote on last edited by
        #4

        int colm = 0; if (objBUS.busDataSet.Tables["tblSwapedColumns"].Columns.Count > 0) { for (int X = 0; X < objBUS.busDataSet.Tables["tblSwapedColumns"].Columns.Count; X++) { if (objBUS.busDataSet.Tables["tblSwapedColumns"].Columns[X].ToString() == objBUS.busDataSet.Tables["tbl"].Columns[colm].ToString()) { if (colm == 0) { for (int Q = 0; Q < objBUS.busDataSet.Tables["tbl"].Rows.Count; Q++) { objBUS.busDataSet.Tables["tblSwapedColumns"].Rows.Clear(); DataRow DRow = objBUS.tblSwapedColumns.NewRow(); DRow[objBUS.busDataSet.Tables["tblSwapedColumns"].Columns[X]] = objBUS.busDataSet.Tables["tbl"].Rows[Q][colm].ToString();//here code //give exception "Column 'FIRST NAME' does not belong to table tblSwapedColumns" //'FIRST NAME' is the column name which is previously present in the table. objBUS.tblSwapedColumns.Rows.Add(DRow); } colm++; } else { for (int Q = 0; Q < objBUS.busDataSet.Tables["tbl"].Rows.Count; Q++) { objBUS.busDataSet.Tables["tblSwapedColumns"].Rows[X][Q] = objBUS.busDataSet.Tables["tbl"].Rows[X][colm].ToString(); objBUS.busDataSet.Tables["tblSwapedColumns"].AcceptChanges(); } colm++; } } } }

        B 1 Reply Last reply
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        • B Brij

          can you post your code?How are you doing this.

          Cheers!! Brij

          M Offline
          M Offline
          Malik1122
          wrote on last edited by
          #5

          you got what i have done...?

          1 Reply Last reply
          0
          • V Vimalsoft Pty Ltd

            Good Mornig Malik1122 We cant know what is the Problem until we see the code, another thing that can be easly done on the SQL. e.g

            INSERT INTO TABLE2
            SELECT COL1,COL2 FROM TABLE1
            WHERE COL1 IS NOT NULL

            Always try to keep the sql side in SQl , because these things can be achieve at ease that side than trying to loop through a datatable. Please explain clearly what is your problem.

            Vuyiswa Maseko, Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers." C#/VB.NET/ASP.NET/SQL7/2000/2005/2008 http://www.vuyiswamaseko.somee.com http://www.vuyiswamaseko.tiyaneProperties.co.za vuyiswa@its.co.za http://www.itsabacus.co.za/itsabacus/

            M Offline
            M Offline
            Malik1122
            wrote on last edited by
            #6

            Good Morning :) i have send the code so please check it and help me in doing this.

            V 1 Reply Last reply
            0
            • M Malik1122

              Good Morning :) i have send the code so please check it and help me in doing this.

              V Offline
              V Offline
              Vimalsoft Pty Ltd
              wrote on last edited by
              #7

              Can i see the Structure of tblSwapedColumns ?

              Vuyiswa Maseko, Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers." C#/VB.NET/ASP.NET/SQL7/2000/2005/2008 http://www.vuyiswamaseko.somee.com http://www.vuyiswamaseko.tiyaneProperties.co.za vuyiswa@its.co.za http://www.itsabacus.co.za/itsabacus/

              M 1 Reply Last reply
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              • V Vimalsoft Pty Ltd

                Can i see the Structure of tblSwapedColumns ?

                Vuyiswa Maseko, Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers." C#/VB.NET/ASP.NET/SQL7/2000/2005/2008 http://www.vuyiswamaseko.somee.com http://www.vuyiswamaseko.tiyaneProperties.co.za vuyiswa@its.co.za http://www.itsabacus.co.za/itsabacus/

                M Offline
                M Offline
                Malik1122
                wrote on last edited by
                #8

                The column of 'tbl' are 1. FIRST NAME 2. LAST NAME 3. DATE OF BIRTH 4. AGE 5. GENDER And that of 'tblSwapedColumns' are 1. GENDER 2. DATE OF BIRTH 3. AGE 4. LAST NAME 5. FIRST NAME

                V 1 Reply Last reply
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                • M Malik1122

                  The column of 'tbl' are 1. FIRST NAME 2. LAST NAME 3. DATE OF BIRTH 4. AGE 5. GENDER And that of 'tblSwapedColumns' are 1. GENDER 2. DATE OF BIRTH 3. AGE 4. LAST NAME 5. FIRST NAME

                  V Offline
                  V Offline
                  Vimalsoft Pty Ltd
                  wrote on last edited by
                  #9

                  The Problem might be the names of your Columns in SQl it would be fine. Try not to name your Field names with Spaces , when Defining your Column names use something like th First_Name or Firstname Last_Name or LastName please Fix that and try to run your code again

                  Vuyiswa Maseko, Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers." C#/VB.NET/ASP.NET/SQL7/2000/2005/2008 http://www.vuyiswamaseko.somee.com http://www.vuyiswamaseko.tiyaneProperties.co.za vuyiswa@its.co.za http://www.itsabacus.co.za/itsabacus/

                  M 2 Replies Last reply
                  0
                  • M Malik1122

                    i want to fill one datatable by another datatable but its not working. so plz help in solving this.

                    B Offline
                    B Offline
                    Baran M
                    wrote on last edited by
                    #10

                    Do you get any error ? whats the output of your code ?

                    Education is not a way to escape poverty — it is a way of fighting it.

                    1 Reply Last reply
                    0
                    • V Vimalsoft Pty Ltd

                      The Problem might be the names of your Columns in SQl it would be fine. Try not to name your Field names with Spaces , when Defining your Column names use something like th First_Name or Firstname Last_Name or LastName please Fix that and try to run your code again

                      Vuyiswa Maseko, Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers." C#/VB.NET/ASP.NET/SQL7/2000/2005/2008 http://www.vuyiswamaseko.somee.com http://www.vuyiswamaseko.tiyaneProperties.co.za vuyiswa@its.co.za http://www.itsabacus.co.za/itsabacus/

                      M Offline
                      M Offline
                      Malik1122
                      wrote on last edited by
                      #11

                      I'm not using any SQL Query to fill datatable. I'm just coying data from one datatable to an other datatable without the use of any Query.

                      1 Reply Last reply
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                      • M Malik1122

                        i want to fill one datatable by another datatable but its not working. so plz help in solving this.

                        Z Offline
                        Z Offline
                        Zafar A khan
                        wrote on last edited by
                        #12

                        Hi Malik. Just Assign one table to other like DataTable dt=datatable; if one table already contains some records and you don't want to loss that then use the following code.

                        //copy tbl1 to tbl2
                        public DataTable MergTables(DataTable tbl1, DataTable tbl2)
                        {
                        if (tbl1.Rows.Count > 0)
                        {
                        foreach (DataRow row in tbl1.Rows)
                        {
                        DataRow newrow = tbl2.NewRow();
                        newrow["Col1"] = row["Col1"].ToString();
                        newrow["Col2"] = row["Col2"].ToString();
                        newrow["Col3"] = row["Col3"].ToString();
                        tbl2.Rows.Add(newrow);
                        tbl2.AcceptChanges();

                                    }
                                }
                                return tbl2;
                            }
                        
                        M 1 Reply Last reply
                        0
                        • M Malik1122

                          int colm = 0; if (objBUS.busDataSet.Tables["tblSwapedColumns"].Columns.Count > 0) { for (int X = 0; X < objBUS.busDataSet.Tables["tblSwapedColumns"].Columns.Count; X++) { if (objBUS.busDataSet.Tables["tblSwapedColumns"].Columns[X].ToString() == objBUS.busDataSet.Tables["tbl"].Columns[colm].ToString()) { if (colm == 0) { for (int Q = 0; Q < objBUS.busDataSet.Tables["tbl"].Rows.Count; Q++) { objBUS.busDataSet.Tables["tblSwapedColumns"].Rows.Clear(); DataRow DRow = objBUS.tblSwapedColumns.NewRow(); DRow[objBUS.busDataSet.Tables["tblSwapedColumns"].Columns[X]] = objBUS.busDataSet.Tables["tbl"].Rows[Q][colm].ToString();//here code //give exception "Column 'FIRST NAME' does not belong to table tblSwapedColumns" //'FIRST NAME' is the column name which is previously present in the table. objBUS.tblSwapedColumns.Rows.Add(DRow); } colm++; } else { for (int Q = 0; Q < objBUS.busDataSet.Tables["tbl"].Rows.Count; Q++) { objBUS.busDataSet.Tables["tblSwapedColumns"].Rows[X][Q] = objBUS.busDataSet.Tables["tbl"].Rows[X][colm].ToString(); objBUS.busDataSet.Tables["tblSwapedColumns"].AcceptChanges(); } colm++; } } } }

                          B Offline
                          B Offline
                          Brij
                          wrote on last edited by
                          #13

                          Sorry for late reply.But as your exception you are trying to access some invalid column name.Please check the schema..

                          Cheers!! Brij

                          1 Reply Last reply
                          0
                          • Z Zafar A khan

                            Hi Malik. Just Assign one table to other like DataTable dt=datatable; if one table already contains some records and you don't want to loss that then use the following code.

                            //copy tbl1 to tbl2
                            public DataTable MergTables(DataTable tbl1, DataTable tbl2)
                            {
                            if (tbl1.Rows.Count > 0)
                            {
                            foreach (DataRow row in tbl1.Rows)
                            {
                            DataRow newrow = tbl2.NewRow();
                            newrow["Col1"] = row["Col1"].ToString();
                            newrow["Col2"] = row["Col2"].ToString();
                            newrow["Col3"] = row["Col3"].ToString();
                            tbl2.Rows.Add(newrow);
                            tbl2.AcceptChanges();

                                        }
                                    }
                                    return tbl2;
                                }
                            
                            M Offline
                            M Offline
                            Malik1122
                            wrote on last edited by
                            #14

                            Thanks for helping. Thats not what I want to do but now finally I resolved the problem. Anyway Thanks.

                            1 Reply Last reply
                            0
                            • V Vimalsoft Pty Ltd

                              The Problem might be the names of your Columns in SQl it would be fine. Try not to name your Field names with Spaces , when Defining your Column names use something like th First_Name or Firstname Last_Name or LastName please Fix that and try to run your code again

                              Vuyiswa Maseko, Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers." C#/VB.NET/ASP.NET/SQL7/2000/2005/2008 http://www.vuyiswamaseko.somee.com http://www.vuyiswamaseko.tiyaneProperties.co.za vuyiswa@its.co.za http://www.itsabacus.co.za/itsabacus/

                              M Offline
                              M Offline
                              Malik1122
                              wrote on last edited by
                              #15

                              Thanks For Help.

                              V 1 Reply Last reply
                              0
                              • M Malik1122

                                Thanks For Help.

                                V Offline
                                V Offline
                                Vimalsoft Pty Ltd
                                wrote on last edited by
                                #16

                                You welcome.

                                Vuyiswa Maseko, Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers." C#/VB.NET/ASP.NET/SQL7/2000/2005/2008 http://www.vuyiswamaseko.somee.com http://www.vuyiswamaseko.tiyaneProperties.co.za vuyiswa@its.co.za http://www.itsabacus.co.za/itsabacus/

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