C# - How to copy a single Excel worksheet from one workbook to another?

Question

I have a need to copy a worksheet from one workbook into another and I\'m a bit stuck. The premise is that I have a \"master\" workbook that stores the templates for a numb

Answer 1

I realise this is a somewhat late reply, but I struggled quite a bit with this so I figured I'd post my solution so that it might help somebody else having this issue.

Having a template sheet you want to fill many times :

    public void test()
    {

        Excel.Application excelApp;

        string fileTarget = "C:\target.xlsx";
        string fileTemplate = "C:\template.xlsx";
        excelApp = new Excel.Application();
        Excel.Workbook wbTemp, wbTarget;
        Excel.Worksheet sh;

        //Create target workbook
        wbTarget = excelApp.Workbooks.Open(fileTemplate);

        //Fill target workbook
        //Open the template sheet
        sh = wbTarget.Worksheets["TEMPLATE"];
        //Fill in some data
        sh.Cells[1, 1] = "HELLO WORLD!";
        //Rename sheet
        sh.Name = "1. SHEET";


        //Save file
        wbTarget.SaveAs(fileTarget);

        //Iterate through the rest of the files
        for (int i = 1; i < 3; i++)
        {
            //Open template file in temporary workbook
            wbTemp = excelApp.Workbooks.Open(fileTemplate);

            //Fill temporary workbook
            //Open the template sheet
            sh = wbTemp.Worksheets["TEMPLATE"];
            //Fill in some data
            sh.Cells[1, 1] = "HELLO WORLD! FOR THE " + i + ".TH TIME";
            //Rename sheet
            sh.Name = i + ". SHEET";

            //Copy sheet to target workbook
            sh.Copy(wbTarget.Worksheets[1]);
            //Close temporary workbook without saving
            wbTemp.Close(false);
        }

        //Close and save target workbook
        wbTarget.Close(true);
        //Kill excelapp
        excelApp.Quit();
    }