U6数据导出工具项目总结二 两种常见的DataGridView输出到EXCEL方法

使用前添加using Excel =Microsoft.Office.Interop.Excel;

并添加引用DLL文件：

C#中输出EXCEL必须的的DLL文件

方法一：

dataGridView1替换为对应的控件Name;

SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "Execl files (*.xls)|*.xls";
saveFileDialog.FilterIndex = 0;
saveFileDialog.RestoreDirectory = true;
saveFileDialog.CreatePrompt = true;
saveFileDialog.Title = "导出EXCEL格式数据";
saveFileDialog.ShowDialog();



System.Reflection.Missing miss = System.Reflection.Missing.Value;



Excel.Application excel = new Excel.ApplicationClass();
Excel.Workbooks books = (Excel.Workbooks)excel.Workbooks;
Excel.Workbook book = (Excel.Workbook)(books.Add(miss));
Excel.Worksheet sheet = (Excel.Worksheet)book.ActiveSheet;
sheet.Name = "sheet1";

int colIndex = 0;
foreach (DataGridViewColumn column in dataGridView2.Columns)
{

colIndex++;
excel.Cells[1, colIndex] = column.HeaderText;
}

for (int i = 0; i < dataGridView2.Rows.Count; i++)
{
for (int j = 0; j < dataGridView2.Columns.Count; j++)
{
excel.Cells[i + 2, j + 1] = dataGridView2.Rows[i].Cells[j].Value;
}
}

String strName = saveFileDialog.FileName.ToString();
if (strName != "")
{
try
{
sheet.SaveAs(strName, miss, miss, miss, miss, miss, Excel.XlSaveAsAccessMode.xlNoChange, miss, miss, miss);
}

catch (Exception ex)
{
String errorinfo = ex.Message.ToString() + "请先关闭这个文件。";
MessageBox.Show(errorinfo);
}


book.Close(false, miss, miss);
books.Close();

excel.Quit();
MessageBox.Show("成功导出数据！");
}

//System.Runtime.InteropServices.Marshal.ReleaseComObject();

System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);

System.Runtime.InteropServices.Marshal.ReleaseComObject(book);

System.Runtime.InteropServices.Marshal.ReleaseComObject(books);

System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);

GC.Collect();

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方法二：

dataGridView2替换为相应控件的Name;

//建立Excel对象
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();

excel.Application.Workbooks.Add(true);
excel.Visible = true;
//生成字段名称
for (int i = 0; i < dataGridView2.ColumnCount; i++)
{
excel.Cells[1, i + 1] = dataGridView2.Columns[i].HeaderText;
}
//填充数据
for (int i = 0; i < dataGridView2.RowCount - 1; i++)
{
for (int j = 0; j < dataGridView2.ColumnCount; j++)
{
if (dataGridView2[j, i].ValueType == typeof(string))
{
excel.Cells[i + 2, j + 1] = "'" + dataGridView2[j, i].Value.ToString();
}
else
{
excel.Cells[i + 2, j + 1] = dataGridView2[j, i].Value.ToString();
}
}
}


//保存方式二结束