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Old February 10th, 2007, 09:21 PM
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Default Excel Interop Issue

Hi,

I need to open an Excel file using Interop, resize a column and then save the file, insuring that the worksheet retains the newly resized column width. As I step through the code all is working fine. But when I reopen the file the new column width has not been saved. If I open the file manually, resize the column, then save, the file retains the new column width. Any suggestions? I should also add that I tried reading the column width after the AutoFit was called and then explicitly set the column width to that value, then I saved the file This also did not work.

Here is the code I used. I have done this in Winforms.

Thanks for your help.
Mark


using Excel=Microsoft.Office.Interop.Excel;

namespace ExcelWindowsTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, System.EventArgs e)
        {
            Excel.Application excel;
            Excel.Workbook book;
            Excel.Worksheet sheet;
            Excel.Range range;

            try
            {
                excel = new Excel.Application();
                excel.Visible = true;

                book = (Excel.Workbook)(excel.Workbooks.Add(@"C:\Document s and Settings\Mark\My Documents\Visual Studio 2005\Projects\ExcelWindowsTest\ExcelWindowsTest\Po rtDeliveryWorkBook.xls"));
                excel.DisplayAlerts = false;
                sheet = (Excel.Worksheet)book.ActiveSheet;
                range = (Excel.Range)sheet.Columns["A", Type.Missing];
                range.AutoFit();

                book.Save();
                excel.Quit();
            }
            catch (Exception theException)
            {
                String errorMessage;
                errorMessage = "Error: ";
                errorMessage = String.Concat(errorMessage, theException.Message);
                errorMessage = String.Concat(errorMessage, " Line: ");
                errorMessage = String.Concat(errorMessage, theException.Source);

                MessageBox.Show(errorMessage, "Error");
            }
        }
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