如何在 microsoft.office.interop.excel 中格式化我的导出到 excel 工作簿？

Question

我有这个导出功能，允许我在一个 Excel 中将 2 个网格视图导出到 2 个单独的工作表中。

但我的问题是：

1. 当我单击导出按钮以提示用户打开、另存为、取消下载而不是将其保存到特定位置（目前我在我的代码中所做的）时，如何像通常的下载一样有一个通常的弹出窗口？

2. 如何设置代码来为所有单元格启用 wraptext = true 并自动设置列高和列宽的格式以固定所有文本，以便在列宽为打开excel时太小了。

protected void EXPORT_BUTTON_Click(object sender, EventArgs e) { Microsoft.Office.Interop.Excel._Application app = new Microsoft.Office.Interop.Excel.Application(); // 在 Excel 应用程序中创建新工作簿 Microsoft.Office.Interop.Excel._Workbook workbook = app.Workbooks.Add(Type.Missing);

String DT1 = "Data table 1";
String DT2 = "Data table 2";

ExportToExcel(app, workbook, Gridview1, DT1, 1);

ExportToExcel(app, workbook, Gridview2, DT2, 2);   

}
public void ExportToExcel(Microsoft.Office.Interop.Excel._Application app, Microsoft.Office.Interop.Excel._Workbook workbook, GridView gridview, string SheetName, int sheetid)
{

// see the excel sheet behind the program
app.Visible = true;

// get the reference of first sheet. By default its name is Sheet1.
// store its reference to worksheet

worksheet = (Excel.Worksheet)workbook,Worksheets.Add();

// changing the name of active sheet
worksheet.Name = SheetName;

// storing header part in Excel
for (int i = 1; i < gridview.Columns.Count + 1; i++)
{
    worksheet.Cells[1, i] = gridview.Columns[i - 1].HeaderText;
}



// storing Each row and column value to excel sheet
for (int i = 0; i < gridview.Rows.Count - 1; i++)
{
    for (int j = 0; j < gridview.Columns.Count; j++)
    {
        worksheet.Cells[i + 2, j + 1] = gridview.Rows[i].Cells[j].Text.ToString();
    }
}
//save the application

workbook.SaveAs(@"C:\Users\test\Desktop\Test\" + datetime.ToString("dd-MM-yyyy_hh-mm-ss") + ".xls", Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
            }
}

Answer 1

尝试这个：

Excel.Worksheet worksheet =(Excel.Worksheet)workbook.Worksheets["Sheet" + sheetid];

Answer 2

按照 Laxmikant 的规定，修改您的方法“ExportToExcel”的代码，如下所示。

public void ExportToExcel(Microsoft.Office.Interop.Excel._Application app, Microsoft.Office.Interop.Excel._Workbook workbook, GridView gridview, string SheetName, int sheetid)
{

// see the excel sheet behind the program
app.Visible = true;

worksheet = (Excel.Worksheet)workbook.Worksheets.Add();

// changing the name of active sheet
worksheet.Name = SheetName;

// storing header part in Excel
for (int i = 1; i < gridview.Columns.Count + 1; i++)
{
    worksheet.Cells[1, i] = gridview.Columns[i - 1].HeaderText;
}

// storing Each row and column value to excel sheet
for (int i = 0; i < gridview.Rows.Count - 1; i++)
{
    for (int j = 0; j < gridview.Columns.Count; j++)
    {
        worksheet.Cells[i + 2, j + 1] = gridview.Rows[i].Cells[j].Text.ToString();
    }
}

我删除了这两行代码，现在不需要参数“Sheetid”

Excel.Worksheet worksheet =(Excel.Worksheet)workbook.Worksheets["Sheet" + sheetid];
worksheet = workbook.ActiveSheet;

希望这能解决您的问题

Answer 3

修改excel文件的路径保存为虚拟路径如下

workbook.SaveAs(@"C:\Users\test\Desktop\Test\" + datetime.ToString("dd-MM-yyyy_hh-mm-ss") + ".xls", Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

将此更改为

workbook.SaveAs(@"~/ExcelFiles/Filename.xlsx" + datetime.ToString("dd-MM-yyyy_hh-mm-ss") + ".xls", Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

尝试使用以下代码显示另存为对话框

String FileName = "FileName.xlsx";
String FilePath = "~/ExcelFiles/FileName.xlsx"; 
System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
response.ClearContent();
response.Clear();
response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
response.AddHeader("Content-Disposition", "attachment; filename=" + FileName + ";");
response.TransmitFile(FilePath);
response.Flush();
response.End();

Answer 4

您尚未在工作簿中添加工作表

试试下面的代码

工作表 = (Excel._Worksheet)oXL.Worksheets.Add();

worksheet.Name = SheetName;

有关更多信息，请查看https://geeksarray.com/blog/how-to-export-sql-data-to-excel-using-microsoft-office-interop

使用 rangs 设置标题

  string[] colNames = new string[gv.Columns.Count];

  int col = 0;

  foreach(gvvolumns dc in GridView.Columns)
    colNames[col++] = dc.ColumnName;

  char lastColumn = (char)(65 + dtProducts.Columns.Count - 1);

  oSheet.get_Range("A1", lastColumn + "1").Value2 = colNames;
  oSheet.get_Range("A1", lastColumn + "1").Font.Bold = true;
  oSheet.get_Range("A1", lastColumn + "1").VerticalAlignment 
        = Excel.XlVAlign.xlVAlignCenter;