导出？
/// <summary>
/// 需要添加引用com中的"microsoft excel 11.0 object library"
/// </summary>
///
/// <param name="mydgv"></param>
public void Exportdatagridviewtoexcel(DataGridView mydgv)
{
if (mydgv.Rows.Count == 0)
{
MessageBox.Show(" 没有数据可供导出！", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
SaveFileDialog savedialog = new SaveFileDialog();
savedialog.DefaultExt = "xlsx";
savedialog.Filter = "microsoft office execl files (*.xlsx)|*.xlsx";
savedialog.FilterIndex = 0;
savedialog.RestoreDirectory = true;
savedialog.Title = "导出数据到excel表格";
savedialog.ShowDialog();
if (savedialog.FileName.IndexOf(":") < 0) return; //被点了取消
//Microsoft.office.interop.excel.application xlapp = new microsoft.office.interop.excel.application();
Microsoft.Office.Interop.Excel.Application xlapp = new Microsoft.Office.Interop.Excel.Application();
if (xlapp == null)
{
MessageBox.Show("可能您的机子未安装excel，无法创建excel对象！", "系统提示 ", MessageBoxButtons.OK, MessageBoxIcon.Error);
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
//定义表格内数据的行数和列数
int rowscount = mydgv.Rows.Count;
int colscount = mydgv.Columns.Count;
//行数不可以大于65536
if (rowscount > 65536)
{
MessageBox.Show("数据行记录超过65536行，不能保存！", "系统提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
//列数不可以大于255
if (colscount > 256)
{
MessageBox.Show("数据列记录超过256列，不能保存！", "系统提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
//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++)
{
if (mydgv[i, r].ValueType == typeof(string))
{
worksheet.Cells[r + 2, i + 1] = "" + mydgv.Rows[r].Cells[i].Value;//将长数值转换成文本
}
else
{
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 (savedialog.FileName != "")
{
try
{
workbook.Saved = true;
workbook.SaveCopyAs(savedialog.FileName);
}
catch (Exception ex)
{
MessageBox.Show("导出文件时出错,文件可能正被打开！..." + ex.Message, "系统提示 ", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
//GC.Collect();//强行销毁
MessageBox.Show("数据导出成功！ ", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
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