C# Or LINQ - how to merge two data sheets with different columns in c# RRS feed

  • Question

  • Hi,

    I want to merge two data sheets with different columns in c#..

    For example,

    Based on my sheets and column mention, it should merge the data and display in final output as datatable.

    Sheet1 ==> columnA data and columnC data

    sheet3 ==> columnD data and Column F data

    datatable result ==> merge of ColumnA & ColumnC as one column

                                   merge of ColumnD & ColumnF as another column

    my input string is sheet and column.

    for example,

    inPut string Sheets ==> "Sheet1" and "Sheet3"

    Input string Columns ==> ColumnA & ColumnC(Sheet1)

                                           ColumnD & ColumnF(Sheet3)...

    How to form code in either LINQ or C#..?


    • Edited by Gani tpt Monday, December 18, 2017 5:52 AM
    Monday, December 18, 2017 5:51 AM


  • Hi Gani tpt,

    you can try to refer example below.

    I create 3 sheets.

    Sheet1 and sheet2 contains the data as per your requirement.

    when I click button it will copy and merge data in Sheet3.

    further you can use it as per your requirement.

    Data in Sheet1:



     private void button1_Click(object sender, EventArgs e)
                Excel.Application excelApplication = new Excel.Application();
                Excel.Workbook srcworkBook = excelApplication.Workbooks.Open(@"C:\Users\v-padee\Desktop\demo.xlsx");
                excelApplication.Visible = true;
                Excel.Worksheet srcworkSheet1 = srcworkBook.Worksheets.get_Item(1);
                Excel.Worksheet srcworkSheet2 = srcworkBook.Worksheets.get_Item(2);
                Excel.Worksheet srcworkSheet3 = srcworkBook.Worksheets.get_Item(3);
                int intTotalRows = srcworkSheet1.Rows.Count;
                int lastRow = srcworkSheet1.Cells[intTotalRows, 1].End(Excel.XlDirection.xlUp).Row;
                Excel.Range rng;
                rng = srcworkSheet1.Range["A1:A" + lastRow];
                foreach (Excel.Range cell in rng.Cells)
                    srcworkSheet3.Range[cell.Address].Value = cell.Value + "," + cell.Offset[0, 2].Value;
                     //MessageBox.Show(cell.Value + cell.Offset[0, 2].Value);
                int intTotalRows1 = srcworkSheet2.Rows.Count;
                int lastRow1 = srcworkSheet2.Cells[intTotalRows1, 4].End(Excel.XlDirection.xlUp).Row;
                Excel.Range rng1;
                rng1 = srcworkSheet2.Range["D1:D" + lastRow1];
                foreach (Excel.Range cell in rng1.Cells)
                    srcworkSheet3.Range[cell.Address].Value = cell.Value + "," + cell.Offset[0, 2].Value;
                    //MessageBox.Show(cell.Value + cell.Offset[0, 2].Value);


    further you can modify the code as per your need.



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    • Marked as answer by Gani tpt Tuesday, December 19, 2017 9:57 AM
    Tuesday, December 19, 2017 6:38 AM