C#将DataGridView中的数据保存为EXCEL的方法
/// <summary>
///方法，导出DataGridView中的数据到Excel文件
/// </summary>
/// <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
dlg.ShowDialog();
//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 <= 0)
{
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 <= 0)
{
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 > 65536)
{
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 > 255)
{
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 = 1;
for (int i = 0; i <= dgv.ColumnCount-1; i++)
{
if (dgv.Columns[i].Visible==true)
{
objExcel.Cells[1, 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 = 0; row <= dgv.RowCount - 1; row++)
{
//tempProgressBar.PerformStep();
displayColumnsCount = 1;
for (int col = 0; col < colscount; col++)
{
if (dgv.Columns[col].Visible == true)
{
objExcel.Cells[row + 2, displayColumnsCount] = dgv.Rows[row].Cells[col].Value.ToString().Trim();
displayColumnsCount++;
}
}
}
//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);
}
#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
//dlg.ShowDialog();
////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 = this.dataGridView2.Rows.Count;
int colscount = this.dataGridView2.Columns.Count;
//行数必须大于0
if (rowscount <= 0)
{
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 <= 0)
{
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 > 65536)
{
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 > 255)
{
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
//导出到execl
try
{
//没有数据的话就不往下执行
if (dataGridView2.Rows.Count == 0)
return;
//实例化一个Excel.Application对象
Excel.Application excel = new Excel.Application();
//让后台执行设置为不可见，为true的话会看到打开一个Excel，然后数据在往里写
excel.Visible = false;
//新增加一个工作簿，Workbook是直接保存，不会弹出保存对话框，加上Application会弹出保存对话框，值为false会报错
excel.Application.Workbooks.Add(true);
//生成Excel中列头名称
for (int i = 0; i < dataGridView2.Columns.Count; i++)
{
excel.Cells[1, i + 1] = dataGridView2.Columns[i].HeaderText;
}
//把DataGridView当前页的数据保存在Excel中
for (int i = 0; i < dataGridView2.Rows.Count - 1; i++)
{
for (int j = 0; j < dataGridView2.Columns.Count; 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();
}
}
}
//设置禁止弹出保存和覆盖的询问提示框
excel.DisplayAlerts = false;
excel.AlertBeforeOverwriting = false;
//保存工作簿
//excel.Application.Workbooks.Add(true).Save();
//保存excel文件
excel.Save("D:" + """KKHMD.xls");
//确保Excel进程关闭
excel.Quit();
excel = null;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "错误提示");
}
/// <summary>
///方法，导出DataGridView中的数据到Excel文件
/// </summary>
/// <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
dlg.ShowDialog();
//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 <= 0)
{
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 <= 0)
{
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 > 65536)
{
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 > 255)
{
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 = 1;
for (int i = 0; i <= dgv.ColumnCount-1; i++)
{
if (dgv.Columns[i].Visible==true)
{
objExcel.Cells[1, 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 = 0; row <= dgv.RowCount - 1; row++)
{
//tempProgressBar.PerformStep();
displayColumnsCount = 1;
for (int col = 0; col < colscount; col++)
{
if (dgv.Columns[col].Visible == true)
{
objExcel.Cells[row + 2, displayColumnsCount] = dgv.Rows[row].Cells[col].Value.ToString().Trim();
displayColumnsCount++;
}
}
}
//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);
}