转自：https://www.cnblogs.com/chaowang/p/6265698.html
1,窗体设计
首先需要引入程序集：Microsoft.Office.Interop.Excel （如果没有引用过的需要右键添加引用再搜索就行了）
实现的方法：
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/// <summary>
///
/// </summary>
/// <param name="fileName">文件路径</param>
/// <param name="myDGV">控件DataGridView</param>
private
void
ExportExcels(
string
fileName, DataGridView myDGV)
{
string
saveFileName =
""
;
SaveFileDialog saveDialog =
new
SaveFileDialog();
saveDialog.DefaultExt =
"xls"
;
saveDialog.Filter =
"Excel文件|*.xls"
;
saveDialog.FileName = fileName;
saveDialog.ShowDialog();
saveFileName = saveDialog.FileName;
if
(saveFileName.IndexOf(
":"
) < 0)
return
;
//被点了取消
Microsoft.Office.Interop.Excel.Application xlApp =
new
Microsoft.Office.Interop.Excel.Application();
if
(xlApp ==
null
)
{
MessageBox.Show(
"无法创建Excel对象，可能您的机子未安装Excel"
);
return
;
}
Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];
//取得sheet1
//写入标题
for
(
int
i = 0; i < myDGV.ColumnCount; i++)
{
worksheet.Cells[1, i + 1] = myDGV.Columns[i].HeaderText;
}
//写入数值
for
(
int
r = 0; r < myDGV.Rows.Count; r++)
{
for
(
int
i = 0; i < myDGV.ColumnCount; i++)
{
worksheet.Cells[r + 2, i + 1] = myDGV.Rows[r].Cells[i].Value;
}
System.Windows.Forms.Application.DoEvents();
}
worksheet.Columns.EntireColumn.AutoFit();
//列宽自适应
if
(saveFileName !=
""
)
{
try
{
workbook.Saved =
true
;
workbook.SaveCopyAs(saveFileName);
}
catch
(Exception ex)
{
MessageBox.Show(
"导出文件时出错,文件可能正被打开！\n"
+ ex.Message);
}
}
xlApp.Quit();
GC.Collect();
//强行销毁
MessageBox.Show(
"文件： "
+ fileName +
".xls 保存成功"
,
"信息提示"
, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
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点击按钮调用
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private
void
button1_Click(
object
sender, EventArgs e)
{
string
a =
"D:"
+
"\\KKHMD.xls"
;
ExportExcels(a, dataGridView1);
}
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完成截图
