/// <summary>
///方法，导出DataGridView中的数据到Excel文件
/// </summary>
/// <remarks>
/// </remarks>
/// <param name= "dgv"> DataGridView </param>
public static void DataGridViewToExcel(MultiColHeaderDgv dgv)
{
#region
//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 <= 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 = new Excel.Application();
Excel.Workbook objWorkbook = null;
Excel.Worksheet objsheet = null;
try
{
//申明对象
objExcel = new Excel.ApplicationClass();
//objWorkbook = objExcel.Workbooks.Add(Missing.Value);
objWorkbook = objExcel.Workbooks.Add(Missing.Value);
//objsheet = (Microsoft.Office.Interop.Excel.Worksheet)objWorkbook.ActiveSheet;
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;
//Excel.Range
Excel.Range range1 = objExcel.get_Range(objExcel.Cells[1, 1], objExcel.Cells[3, 1]);
Excel.Range range2 = objExcel.get_Range(objExcel.Cells[1, 2], objExcel.Cells[3, 2]);
Excel.Range range3 = objExcel.get_Range(objExcel.Cells[1, 3], objExcel.Cells[3, 3]);
Excel.Range range4 = objExcel.get_Range(objExcel.Cells[1, 4], objExcel.Cells[3, 4]);
Excel.Range range5 = objExcel.get_Range(objExcel.Cells[1, 5], objExcel.Cells[3, 5]);
Excel.Range range6 = objExcel.get_Range(objExcel.Cells[1, 6], objExcel.Cells[3, 6]);
Excel.Range range7 = objExcel.get_Range(objExcel.Cells[1, 7], objExcel.Cells[3, 7]);
Excel.Range range8 = objExcel.get_Range(objExcel.Cells[2, 8], objExcel.Cells[3, 8]);
Excel.Range range9 = objExcel.get_Range(objExcel.Cells[1, 8], objExcel.Cells[1, 11]);
Excel.Range range10 = objExcel.get_Range(objExcel.Cells[2, 9], objExcel.Cells[2, 11]);
range1.Merge(0);
range2.Merge(0);
range3.Merge(0);
range4.Merge(0);
range5.Merge(0);
range6.Merge(0);
range7.Merge(0);
range8.Merge(0);
range9.Merge(0);
range9.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter; // 文本水平居中方式
range10.Merge(0);
range10.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;
range1.NumberFormatLocal = "@"; //设置单元格格式为文本
range2.NumberFormatLocal = "@"; //设置单元格格式为文本
range3.NumberFormatLocal = "@"; //设置单元格格式为文本
range4.NumberFormatLocal = "@"; //设置单元格格式为文本
range5.NumberFormatLocal = "@"; //设置单元格格式为文本
range6.NumberFormatLocal = "@"; //设置单元格格式为文本
range7.NumberFormatLocal = "@"; //设置单元格格式为文本
range8.NumberFormatLocal = "@"; //设置单元格格式为文本
range9.NumberFormatLocal = "@"; //设置单元格格式为文本
objsheet.Cells[1, 1] = "财务分类";
objsheet.Cells[1, 2] = "项目代码";
objsheet.Cells[1, 3] = "项目名称";
objsheet.Cells[1, 4] = "项目内涵";
objsheet.Cells[1, 5] = "除外内容";
objsheet.Cells[1, 6] = "计价单位";
objsheet.Cells[1, 7] = "说明";
objsheet.Cells[2, 8] = "省定价";
objsheet.Cells[3, 9] = "三档";
objsheet.Cells[3, 10] = "二档";
objsheet.Cells[3, 11] = "一档";
objsheet.Cells[1, 8] = "价格（元）";
objsheet.Cells[2, 9] = "市定价格";
range2.ColumnWidth = 12; //设置单元格的宽度
range3.ColumnWidth = 20; //设置单元格的宽度
range4.ColumnWidth = 35; //设置单元格的宽度
range5.ColumnWidth = 25; //设置单元格的宽度
range7.ColumnWidth = 25; //设置单元格的宽度
range2.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter; // 文本水平居中方式
range3.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter; // 文本水平居中方式
range4.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter; // 文本水平居中方式
range5.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter; // 文本水平居中方式
range7.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter; // 文本水平居中方式
Excel.Range rangGol = objsheet.get_Range("A1", "K" + dgv.RowCount.ToString());
rangGol.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter; // 文本水平居中方式
rangGol.WrapText = true;
//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)
{
try
{
objExcel.Cells[row + 4, displayColumnsCount] = dgv.Rows[row].Cells[col].Value.ToString().Trim();
displayColumnsCount++;
}
catch (Exception)
{
}
}
}
}
//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);
}
