//原文出处：http://www.yongfa365.com/Item/DataGridViewToExcel.html
1 #region DataGridView数据显示到Excel
/// <summary>
/// 打开Excel并将DataGridView控件中数据导出到Excel
/// </summary>
/// <param name="dgv">DataGridView对象 </param>
/// <param name="isShowExcle">是否显示Excel界面 </param>
/// <remarks>
/// add com "Microsoft Excel 11.0 Object Library"
/// using Excel=Microsoft.Office.Interop.Excel;
/// </remarks>
/// <returns> </returns>
public bool DataGridviewShowToExcel(DataGridView dgv, bool isShowExcle)
{
if (dgv.Rows.Count == )
return false;
//建立Excel对象
Excel.Application excel = new Excel.Application();
excel.Application.Workbooks.Add(true);
excel.Visible = isShowExcle;
//生成字段名称
for (int i = ; i < dgv.ColumnCount; i++)
{
excel.Cells[, i + ] = dgv.Columns[i].HeaderText;
}
//填充数据
for (int i = ; i < dgv.RowCount - ; i++)
{
for (int j = ; j < dgv.ColumnCount; j++)
{
if (dgv[j, i].ValueType == typeof(string))
{
excel.Cells[i + , j + ] = "'" + dgv[j, i].Value.ToString();
}
else
{
excel.Cells[i + , j + ] = dgv[j, i].Value.ToString();
}
}
}
return true;
}
#endregion #region DateGridView导出到csv格式的Excel
/// <summary>
/// 常用方法，列之间加\t，一行一行输出，此文件其实是csv文件，不过默认可以当成Excel打开。
/// </summary>
/// <remarks>
/// using System.IO;
/// </remarks>
/// <param name="dgv"></param>
private void DataGridViewToExcel(DataGridView dgv)
{
SaveFileDialog dlg = new SaveFileDialog();
dlg.Filter = "Execl files (*.xls)|*.xls";
dlg.FilterIndex = ;
dlg.RestoreDirectory = true;
dlg.CreatePrompt = true;
dlg.Title = "保存为Excel文件"; if (dlg.ShowDialog() == DialogResult.OK)
{
Stream myStream;
myStream = dlg.OpenFile();
StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding(-));
string columnTitle = "";
try
{
//写入列标题
for (int i = ; i < dgv.ColumnCount; i++)
{
if (i > )
{
columnTitle += "\t";
}
columnTitle += dgv.Columns[i].HeaderText;
}
sw.WriteLine(columnTitle); //写入列内容
for (int j = ; j < dgv.Rows.Count; j++)
{
string columnValue = "";
for (int k = ; k < dgv.Columns.Count; k++)
{
if (k > )
{
columnValue += "\t";
}
if (dgv.Rows[j].Cells[k].Value == null)
columnValue += "";
else
columnValue += dgv.Rows[j].Cells[k].Value.ToString().Trim();
}
sw.WriteLine(columnValue);
}
sw.Close();
myStream.Close();
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
finally
{
sw.Close();
myStream.Close();
}
}
}
#endregion #region DataGridView导出到Excel，有一定的判断性
/// <summary>
///方法，导出DataGridView中的数据到Excel文件
/// </summary>
/// <remarks>
/// add com "Microsoft Excel 11.0 Object Library"
/// using Excel=Microsoft.Office.Interop.Excel;
/// using System.Reflection;
/// </remarks>
/// <param name= "dgv"> DataGridView </param>
public static void DataGridViewToExcel(DataGridView dgv)
{ #region 验证可操作性 //申明保存对话框
SaveFileDialog dlg = new SaveFileDialog();
//默然文件后缀
dlg.DefaultExt = "xls ";
//文件后缀列表
dlg.Filter = "EXCEL文件(*.XLS)|*.xls ";
//默然路径是系统当前路径
dlg.InitialDirectory = Directory.GetCurrentDirectory();
//打开保存对话框
if (dlg.ShowDialog() == DialogResult.Cancel) return;
//返回文件路径
string fileNameString = dlg.FileName;
//验证strFileName是否为空或值无效
if (fileNameString.Trim() == " ")
{ return; }
//定义表格内数据的行数和列数
int rowscount = dgv.Rows.Count;
int colscount = dgv.Columns.Count;
//行数必须大于0
if (rowscount <= )
{
MessageBox.Show("没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
} //列数必须大于0
if (colscount <= )
{
MessageBox.Show("没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
} //行数不可以大于65536
if (rowscount > )
{
MessageBox.Show("数据记录数太多(最多不能超过65536条)，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
} //列数不可以大于255
if (colscount > )
{
MessageBox.Show("数据记录行数太多，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
} //验证以fileNameString命名的文件是否存在，如果存在删除它
FileInfo file = new FileInfo(fileNameString);
if (file.Exists)
{
try
{
file.Delete();
}
catch (Exception error)
{
MessageBox.Show(error.Message, "删除失败 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
}
#endregion
Excel.Application objExcel = null;
Excel.Workbook objWorkbook = null;
Excel.Worksheet objsheet = null;
try
{
//申明对象
objExcel = new Microsoft.Office.Interop.Excel.Application();
objWorkbook = objExcel.Workbooks.Add(Missing.Value);
objsheet = (Excel.Worksheet)objWorkbook.ActiveSheet;
//设置EXCEL不可见
objExcel.Visible = false; //向Excel中写入表格的表头
int displayColumnsCount = ;
for (int i = ; i <= dgv.ColumnCount - ; i++)
{
if (dgv.Columns[i].Visible == true)
{
objExcel.Cells[, displayColumnsCount] = dgv.Columns[i].HeaderText.Trim();
displayColumnsCount++;
}
}
//设置进度条
//tempProgressBar.Refresh();
//tempProgressBar.Visible = true;
//tempProgressBar.Minimum=1;
//tempProgressBar.Maximum=dgv.RowCount;
//tempProgressBar.Step=1;
//向Excel中逐行逐列写入表格中的数据
for (int row = ; row <= dgv.RowCount - ; row++)
{
//tempProgressBar.PerformStep(); displayColumnsCount = ;
for (int col = ; col < colscount; col++)
{
if (dgv.Columns[col].Visible == true)
{
try
{
objExcel.Cells[row + , displayColumnsCount] = dgv.Rows[row].Cells[col].Value.ToString().Trim();
displayColumnsCount++;
}
catch (Exception)
{ } }
}
}
//隐藏进度条
//tempProgressBar.Visible = false;
//保存文件
objWorkbook.SaveAs(fileNameString, Missing.Value, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Excel.XlSaveAsAccessMode.xlShared, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value);
}
catch (Exception error)
{
MessageBox.Show(error.Message, "警告 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
finally
{
//关闭Excel应用
if (objWorkbook != null) objWorkbook.Close(Missing.Value, Missing.Value, Missing.Value);
if (objExcel.Workbooks != null) objExcel.Workbooks.Close();
if (objExcel != null) objExcel.Quit(); objsheet = null;
objWorkbook = null;
objExcel = null;
}
MessageBox.Show(fileNameString + "\n\n导出完毕! ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information); } #endregion
#region DataGridView导出到Excel解决打开时报后缀名不一致的问题
/// <summary>
/// DataGridView导出至Excel,解决问题:打开Excel文件格式与扩展名指定格式不一致
/// </summary>
/// <param name="dataGridView">数据源表格</param>
/// <param name="isShowExcle">导出时是否显示excel界面</param>
/// <returns></returns>
public static bool DcExcel(DataGridView dataGridView, bool isShowExcle = true)
{
int FormatNum;//保存excel文件的格式
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
string excelVersion = excel.Version;//获取你使用的excel 的版本号 //声明保存对话框
SaveFileDialog saveFileDialog = new SaveFileDialog();
//默然文件后缀
saveFileDialog.DefaultExt = "xls"; if (Convert.ToDouble(excelVersion) < )//You use Excel 97-2003
{
FormatNum = -;
//文件后缀列表
saveFileDialog.Filter = "Excel(*.xls)|*.xls";
}
else//you use excel 2007 or later
{
FormatNum = ;
//文件后缀列表
saveFileDialog.Filter = "Excel(*.xls)|*.xls|Excel(2007-2016)(*.xlsx)|*.xlsx";
}
Form fr = dataGridView.Parent as Form;
if (fr != null)//默认文件名
{
saveFileDialog.FileName = fr.Text;
}
//默然路径是系统当前路径
saveFileDialog.InitialDirectory = Directory.GetCurrentDirectory();
//打开保存对话框
if (saveFileDialog.ShowDialog() == DialogResult.Cancel)
return false;
//返回文件路径
string fileName = saveFileDialog.FileName;
if (string.IsNullOrEmpty(fileName.Trim()))
{ return false; }
if (dataGridView.Rows.Count == )
return false;
//建立Excel对象 var objWorkbook = excel.Application.Workbooks.Add(true);
excel.Visible = isShowExcle;
//生成字段名称
for (int i = ; i < dataGridView.ColumnCount; i++)
{
excel.Cells[, i + ] = dataGridView.Columns[i].HeaderText;
excel.Cells[, i + ].Font.Bold = true;
}
//填充数据
for (int i = ; i < dataGridView.RowCount - ; i++)
{
for (int j = ; j < dataGridView.ColumnCount; j++)
{
if (dataGridView[j, i].ValueType == typeof(string))
{
excel.Cells[i + , j + ] = "'" + dataGridView[j, i].Value.ToString();
}
else
{
excel.Cells[i + , j + ] = dataGridView[j, i].Value.ToString();
}
}
}
//Excel.XlFileFormat.xlOpenXMLWorkbook（.xlsx）
//Excel.XlFileFormat.xlExcel8（Excel97 - 2003, .xls）
//判断excel文件的保存格式是xls还是xlsx
var format = fileName.EndsWith(".xls") ? Microsoft.Office.Interop.Excel.XlFileFormat.xlExcel8 : Microsoft.Office.Interop.Excel.XlFileFormat.xlOpenXMLWorkbook;
objWorkbook.SaveAs(fileName, format, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlShared, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value);
return true;
}
#endregion