DataTable数据导入到Excel 引用Microsoft Office 12.0 Object Library和 Microsoft Excel 14.0 Object Library 并且需要注意的问题

时间:2022-02-17 17:11:48
        /// <summary>
/// 将DataTalbe导出到Excel中
/// </summary>
/// <param name="dt"></param>
/// <param name="ProjectName">生成的Excel的Sheet的名字</param>
/// <param name="filePath">保存的路径</param>
public static void Export(System.Data.DataTable dt, string filePath)
{
if (dt == null)
{
throw new Exception("数据表中无数据");
}
int eRowIndex = 1;
int eColIndex = 1;
int cols = dt.Columns.Count;
int rows = dt.Rows.Count;
Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.ApplicationClass();
Microsoft.Office.Interop.Excel.Workbook xlBook = xlApp.Workbooks.Add(true);
try
{
//列名的处理
for (int i = 0; i < cols; i++)
{
xlApp.Cells[eRowIndex, eColIndex] = dt.Columns[i].ColumnName;
eColIndex++;
}
//列名加粗显示
xlApp.get_Range(xlApp.Cells[eRowIndex, 1], xlApp.Cells[eRowIndex, cols]).Font.Bold = true;
xlApp.get_Range(xlApp.Cells[eRowIndex, 1], xlApp.Cells[rows + 1, cols]).Font.Name = "Arial";
xlApp.get_Range(xlApp.Cells[eRowIndex, 1], xlApp.Cells[rows + 1, cols]).Font.Size = "10";
eRowIndex++;

for (int i = 0; i < rows; i++)
{
eColIndex = 1;
for (int j = 0; j < cols; j++)
{
xlApp.Cells[eRowIndex, eColIndex] = dt.Rows[i][j].ToString();
eColIndex++;
}
eRowIndex++;
}
//控制单元格中的内容。
xlApp.Cells.EntireColumn.AutoFit();

xlApp.DisplayAlerts = false;
xlBook.SaveCopyAs(filePath);
xlApp.Workbooks.Close();
}
catch
{
throw;
}
finally
{
xlApp.Quit();
//杀掉Excel进程。
GC.Collect();
}
}

 注意:using Microsoft.Office.Interop.Excel;  VS2010 下 添加引用  COM选项中找Microsoft Office 12.0 Object Library  Microsoft Excel 14.0 Object Library

引用目录下出现Microsoft.Office.Core     Microsoft.Office.Interop.Excel

如果代码中出现  Excel.ApplicationClass()无法互嵌套操作类型 请改用适用的接口 

把引用的Microsoft.Office.Interop.Excel 右击属性 嵌入互操作类型改为false即可