如何从 C# 应用程序将图片插入 Excel？

Question

我正在尝试使用我的 C# 应用程序将图片插入 Excel 电子表格。

我使用以下内容作为我的来源。 http://csharp.net-informations.com/excel/csharp-insert-picture-excel.htm

整行都带有蓝色下划线。

 xlWorkSheet.Shapes.AddPicture("C:\\pic.JPG", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 50, 50, 300, 45); 

我的代码：

private void btnWriteSpreedSheet_Click(object sender, EventArgs e)
{
    Excel.Application xlApp;
    Excel.Workbook xlWorkBook;
    Excel.Worksheet xlWorkSheet;
    object misValue = System.Reflection.Missing.Value;

    xlApp = new Excel.ApplicationClass();
    xlWorkBook = xlApp.Workbooks.Add(misValue);
    xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

    //xlWorkSheet.SetBackgroundPicture("C:/Users/Shaun/Documents/Visual Studio 2010/Projects/TestXMLToEXCEL/TestXMLToEXCEL/bin/Debugpic.JPG"); //

    //add some text 
    xlWorkSheet.Cells[1, 1] = "http://csharp.net-informations.com";
    xlWorkSheet.Cells[2, 1] = "Adding picture in Excel File";

    xlWorkSheet.Shapes.AddPicture("C:\\pic.JPG", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 50, 50, 300, 45); //C:\\csharp-xl-picture.JPG

     xlWorkBook.SaveAs("csharp.net-informations.xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
    xlWorkBook.Close(true, misValue, misValue);
    xlApp.Quit();

    releaseObject(xlApp);
    releaseObject(xlWorkBook);
    releaseObject(xlWorkSheet);

    MessageBox.Show ("File created !");
}

private void releaseObject(object obj)
{
    try
    {
        System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
        obj = null;
    }
    catch (Exception ex)
    {
        obj = null;
        MessageBox.Show("Unable to release the Object " + ex.ToString());
    }
    finally
    {
        GC.Collect();
    }
}

---

错误信息：

最好的重载方法匹配 'Microsoft.Office.Interop.Excel.Shapes.AddPicture（字符串， Microsoft.Office.Core.MsoTriState，Microsoft.Office.Core.MsoTriState， float, float, float, float)' 有一些无效参数

“Microsoft.Office.Core.MsoTriState”类型在程序集中定义 没有被引用。您必须添加对装配“办公室”的引用， 版本=12.0.0.0，文化=中性，PublicKeyToken=71e9bce111e9429c'。

参数 2：无法从 'Microsoft.Office.Core.MsoTriState 转换 [c:\用户\肖恩\文档\视觉工作室 2010\Projects\TestXMLToEXCEL\TestXMLToEXCEL\CreateSpreadSheet.cs]' 到 'Microsoft.Office.Core.MsoTriState'

参数 3：无法从 'Microsoft.Office.Core.MsoTriState 转换 [c:\用户\肖恩\文档\视觉工作室 2010\Projects\TestXMLToEXCEL\TestXMLToEXCEL\CreateSpreadSheet.cs]' 到 'Microsoft.Office.Core.MsoTriState'

---

我的参考资料：

using Excel = Microsoft.Office.Interop.Excel;
using Microsoft.Office.Core;
using Microsoft.Office;
using System.Xml;

Answer 1

添加以下引用：

• Microsoft.Office.Interop.Excel 来自 .Net 选项卡
• Microsoft Office 14.0 Object Library 来自 COM 选项卡

添加以下 using 语句：

using Microsoft.Office.Core;
using Excel = Microsoft.Office.Interop.Excel;
using System.Runtime.InteropServices;

然后是你的方法（略有改动）：

private void BtnWriteSpreedSheetClick(object sender, EventArgs e)
{
    var xlApp = new Excel.Application();
    Excel.Workbook xlWorkBook = xlApp.Workbooks.Add();
    Excel.Worksheet xlWorkSheet = xlWorkBook.Sheets[1];

    xlWorkSheet.Cells[1, 1] = "http://csharp.net-informations.com";
    xlWorkSheet.Cells[2, 1] = "Adding picture in Excel File";

    xlWorkSheet.Shapes.AddPicture(@"C:\pic.JPG", MsoTriState.msoFalse, MsoTriState.msoCTrue, 50, 50, 300, 45);

    xlWorkBook.SaveAs("csharp.net-informations.xls", Excel.XlFileFormat.xlWorkbookNormal);
    xlWorkBook.Close(true);
    xlApp.Quit();

    Marshal.ReleaseComObject(xlApp);

    MessageBox.Show("File created !");
}

Answer 2

您需要添加 Microsoft excel 库。

Answer 3

作为替代方案，您可以使用诸如EPPlus 之类的Open Xml 库来执行此操作。

在我看来，EPPlus 比 Excel 互操作更容易、更直观，无需手动释放资源。它还有一个额外的好处是它可以在没有安装 Excel 的机器上执行。

像这样简单的 EPPlus 效果很好：

using (var excel = new ExcelPackage())
{
    var wks = excel.Workbook.Worksheets.Add("Sheet1");
    wks.Cells[1, 1].Value = "Adding picture below:";
    var pic = wks.Drawings.AddPicture("MyPhoto", new FileInfo("image.png"));
    pic.SetPosition(2, 0, 1, 0);
    excel.SaveAs(new FileInfo("outputfile.xlsx"));
}

Answer 4

只需添加

using Microsoft.Office.Interop.Excel;
using Excel = Microsoft.Office.Interop.Excel;
using Microsoft.Office.Core;

到您的代码并在再次运行之前重建您的解决方案。

Answer 5

我在 Microsoft.Office.Interop.Excel v 14.0 中使用此代码：

xlWorksheet.Shapes.AddPicture(@"c:\pics\logosmall.jpg", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 0, 0, 185, 42);

并且在我的 excel 表格中有图片（jpg 和 png）。

Answer 6

    private void Button1_Click(object sender, EventArgs e)
    {

        Microsoft.Office.Interop.Excel._Application application = new Microsoft.Office.Interop.Excel.Application();
        Microsoft.Office.Interop.Excel._Workbook workbook = application.Workbooks.Add(Type.Missing);
        Microsoft.Office.Interop.Excel._Worksheet worksheet = null;

        SaveFileDialog saveDialog = new SaveFileDialog();
        saveDialog.FileName = "ImageToExcel.xlsx";
        if (saveDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            try
            {
                worksheet = workbook.ActiveSheet;
                worksheet.Name = "Image to Excel";
                string imageNetworkLocation = "\\\\192.168.240.110\\images\\image.png";
                worksheet.Shapes.AddPicture(imageNetworkLocation, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 0, 0, 170, 85);
                workbook.SaveAs(saveDialog.FileName);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            finally
            {
                application.Quit();
                workbook = null;
                application = null;

            }
        }

        else
            try
            {
                workbook.Close(0);
                application.Quit();
                workbook = null;
                application = null;
                System.Runtime.InteropServices.Marshal.ReleaseComObject(application);
            }
            catch (System.Exception ex) 
            {
                MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
    }