Convert DataGrid to DataTabel, because of the particularity of the project, there are other methods for direct conversion.
public void Export(DataGrid dgData, DataTable dataTable, string excelTitle)
{
DataTable dt = new DataTable();
for (int i = 0; i < dgData.Columns.Count; i++)
{
if (dgData.Columns[i].Visibility == System.Windows.Visibility.Visible)//Export only visible columns
{
dt.Columns..Add(dgData.Columns[i].Header.ToString());//Build the header
}
}
for (int i = 0; i < dataTable.Rows.Count; i++)
{
dt.Rows.Add(dataTable.Rows[i].ItemArray); //Add data row
}
ExcelExport(dt, excelTitle);
}
The following functions can then be called directly:
/// <summary>
/// export datatable table to Excel
/// </summary>
/// <param name="DT">datatable表格</param>
/// <param name="title">Title string</param>
/// <returns></returns>public string ExcelExport(System.Data.DataTable DT, string title)
{
try
{
//Create Excel
Microsoft.Office.Interop.Excel.Application ExcelApp = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel.Workbook ExcelBook = ExcelApp.Workbooks.Add(System.Type.Missing);
//Create a worksheet (that is, a sub-sheet in Excel) 1 means export data in the sub-sheet sheet1
Microsoft.Office.Interop.Excel.Worksheet ExcelSheet = (Microsoft.Office.Interop.Excel.Worksheet)ExcelBook.Worksheets[1];
//If there is a numeric type in the data, it can be displayed in text format
ExcelSheet.Cells.NumberFormat = "@";
//set the worksheet name
ExcelSheet.Name = title;
//Set Sheet title
string start = "A1";
string end = ChangeASC(DT.Columns.Count) + "1";
Microsoft.Office.Interop.Excel.Range _Range = (Microsoft.Office.Interop.Excel.Range)ExcelSheet.get_Range(start, end);
_Range.Merge(0); //Cell merge action (to be designed with get_Range() above)
_Range = (Microsoft.Office.Interop.Excel.Range)ExcelSheet.get_Range(start, end);
_Range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
_Range.Font.Size = 22; //Set the font size
_Range.Font.Name = "宋体"; //Set the type of font
ExcelSheet.Cells[1, 1] = title; //Excel cell assignment
_Range.EntireColumn.AutoFit(); //Automatically adjust the column width
//write header
for (int m = 1; m <= DT.Columns.Count; m++)
{
ExcelSheet.Cells[2, m] = DT.Columns[m - 1].ColumnName.ToString();
start = "A2";
end = ChangeASC(DT.Columns.Count) + "2";
_Range = (Microsoft.Office.Interop.Excel.Range)ExcelSheet.get_Range(start, end);
_Range.Font.Size = 14; //Set the font size
_Range.Font.Name = "宋体"; //Set the type of font
_Range.EntireColumn.AutoFit(); //Automatically adjust the column width
_Range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
}
//write data
for (int i = 0; i < DT.Rows.Count; i++)
{
for (int j = 1; j <= DT.Columns.Count; j++)
{
//The first Excel cell starts at index 1
// if (j == 0) j = 1;
ExcelSheet.Cells[i + 3, j] = DT.Rows[i][j - 1].ToString();
}
}
// table property settings
for (int n = 0; n < DT.Rows.Count + 1; n++)
{
start = "A" + (n + 3).ToString();
end = ChangeASC(DT.Columns.Count) + (n + 3).ToString();
//Get multiple cell ranges in Excel
_Range = (Microsoft.Office.Interop.Excel.Range)ExcelSheet.get_Range(start, end);
_Range.Font.Size = 12; //Set the font size
_Range.Font.Name = "宋体"; //Set the type of font
_Range.EntireColumn.AutoFit(); //Automatically adjust the column width
_Range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter; //Set the alignment of the font in the cell _Range.EntireColumn.AutoFit(); //Automatically adjust the column width
}
ExcelApp.DisplayAlerts = false; //When saving Excel, save the window without popping up whether to save or not
////The save dialog box pops up and saves the file
Microsoft.Win32.SaveFileDialog sfd = new Microsoft.Win32.SaveFileDialog();
sfd.DefaultExt = ".xlsx";
sfd.Filter = "Office 2007 File|*.xlsx|Office 2000-2003 File|*.xls|All Files|*.*";
if (sfd.ShowDialog() == true)
{
if (sfd.FileName != "")
{
ExcelBook.SaveAs(sfd.FileName); //Save it to the specified path
System.Windows.MessageBox.Show("The export file has been stored as: " + sfd.FileName, "Warm reminder");
}
}
// release processes that may not have been released
ExcelBook.Close();
ExcelApp.Quit();
// PubHelper.Instance.KillAllExcel(ExcelApp);
return sfd.FileName;
}
catch
{
//System.Windows.MessageBox.Show("Failed to save the export file, the possible reason is that the file is already open!", "Warning!");
return null;
}
}
/// <summary>
/// Get the current column column name and get the corresponding column in EXCEL
/// </summary>
/// <param name="count"></param>
/// <returns></returns>
private string ChangeASC(int count)
{
string ascstr = "";
switch (count)
{
case 1:
ascstr = "A";
break;
case 2:
ascstr = "B";
break;
case 3:
ascstr = "C";
break;
case 4:
ascstr = "D";
break;
case 5:
ascstr = "E";
break;
case 6:
ascstr = "F";
break;
case 7:
ascstr = "G";
break;
case 8:
ascstr = "H";
break;
case 9:
ascstr = "I";
break;
case 10:
ascstr = "J";
break;
case 11:
ascstr = "K";
break;
case 12:
ascstr = "L";
break;
case 13:
ascstr = "M";
break;
case 14:
ascstr = "N";
break;
case 15:
ascstr = "O";
break;
case 16:
ascstr = "P";
break;
case 17:
ascstr = "Q";
break;
case 18:
ascstr = "R";
break;
case 19:
ascstr = "S";
break;
case 20:
ascstr = "T";
break;
default:
ascstr = "U";
break;
}
return ascstr;
}
If necessary, you can convert the table header yourself.