Question

我真的需要帮助...我在互联网上找不到任何例子我正在使用DevExpress GridView我需要将它发送到excel并且我遇到问题循环到每个单元格和列，因为DevExpress包含不同的方法然后DataGridView

这是我正在尝试编写的代码..我真的感谢您的帮助

    public class Form1 : System.Windows.Forms.Form
    {
    Microsoft.Office.Interop.Excel.ApplicationClass ExcelApp = new Microsoft.Office.Interop.Excel.ApplicationClass();

    string FirstName = "First Name";
    string FatherName = "Father Name";
    string LastName = "Last Name";
    }
    public Form1()
    {
        ExcelApp.Application.Workbooks.Add(Type.Missing);
        ExcelApp.Columns.ColumnWidth = 20;
        //
        // Required for Windows Form Designer support
        //
        InitializeComponent();

        //
        // TODO: Add any constructor code after InitializeComponent call
        //
    }
    private void simpleButton1_Click(object sender, System.EventArgs e)
    {
        try
        {
            OleDbConnection con = new OleDbConnection();
            con.ConnectionString = "Provider=Microsoft.Ace.OLEDB.12.0;Data Source=C:\\Users\\pc\\Documents\\Emp.xlsx;Extended Properties=\"Excel 12.0;HDR=Yes\"";

            con.Open();
            DataTable dtSchema;
            dtSchema = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
            OleDbCommand Command = new OleDbCommand ("select * FROM [" + dtSchema.Rows[0]["TABLE_NAME"].ToString() + "]", con);
            OleDbDataAdapter da = new OleDbDataAdapter(Command);
            DataSet ds = new DataSet ();
            da.Fill(ds);
            dataGrid1.DataSource = ds.Tables[0];
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }

    private void ExportBtn_Click(object sender, System.EventArgs e)
    {
        for (int i = 1; i < gridView3.Columns.Count + 1; i++)
        {
            //ExcelApp.Cells[1, i] = gridView3.Columns[i].HeaderStyleName;

        }
        for (int i = 0; i< gridView3.RowCount - 1; i++)
        {
            for (int j = 0; j < gridView3.Columns.Count; j++)
            {
                ExcelApp.Cells[i + 2, j + 1] = gridView3.Columns[j].ToString();
            }
        }
        ExcelApp.ActiveWorkbook.SaveCopyAs("C:\\Users\\pc\\Emp.xlsx");
        ExcelApp.ActiveWorkbook.Saved = true;
        ExcelApp.Quit();
    }

我的问题是在导出按钮中点击事件..没有Row（）

这样的东西

Answer 1

要了解XtraGrid的各种导出方法，请浏览Export Methods and Settings

使用GridControl.ExportToXls(String)方法

示例代码段：

private void mnuExportTable_ItemClick_1(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
    using (SaveFileDialog saveDialog = new SaveFileDialog())
    {
        saveDialog.Filter = "Excel (2003)(.xls)|*.xls|Excel (2010) (.xlsx)|*.xlsx |RichText File (.rtf)|*.rtf |Pdf File (.pdf)|*.pdf |Html File (.html)|*.html";
        if (saveDialog.ShowDialog() != DialogResult.Cancel)
        {
            string exportFilePath = saveDialog.FileName;
            string fileExtenstion = new FileInfo(exportFilePath).Extension;

            switch (fileExtenstion)
            {
                case ".xls":
                    gridControl.ExportToXls(exportFilePath);
                    break;
                case ".xlsx":
                    gridControl.ExportToXlsx(exportFilePath);
                    break;
                case ".rtf":
                    gridControl.ExportToRtf(exportFilePath);
                    break;
                case ".pdf":
                    gridControl.ExportToPdf(exportFilePath);
                    break;
                case ".html":
                    gridControl.ExportToHtml(exportFilePath);
                    break;
                case ".mht":
                    gridControl.ExportToMht(exportFilePath);
                    break;
                default:
                    break;
            }

            if (File.Exists(exportFilePath))
            {
               try
               {
                   //Try to open the file and let windows decide how to open it.
                   System.Diagnostics.Process.Start(exportFilePath);
                }
                catch
                {
                    String msg = "The file could not be opened." + Environment.NewLine + Environment.NewLine + "Path: " + exportFilePath;
                    MessageBox.Show(msg, "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
             }
             else
             {
                 String msg = "The file could not be saved." + Environment.NewLine + Environment.NewLine + "Path: " + exportFilePath;
                 MessageBox.Show(msg, "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
             }
        }
    }
}

参考：
Exporting Several XtraGrid Controls to a Single Excel File

Answer 2

尝试以下代码。 SaveFileDialog1是工具还添加了必需的参考文献 -

 Try

        Dim sv As New SaveFileDialog1
        SaveFileDialog1.Filter = "Excel Workbook|*.xlsx"
        If SaveFileDialog1.ShowDialog() = DialogResult.OK And SaveFileDialog1.FileName <> Nothing Then
            If SaveFileDialog1.FileName.EndsWith(".xlsx") Then
                Dim path = SaveFileDialog1.FileName.ToString()
                GridControlAFP.ExportToXlsx(path)
                Dim xlApp As New Excel.Application
                Dim xlWorkBook As Excel.Workbook
                Dim xlWorkSheet As Excel.Worksheet
                xlWorkBook = xlApp.Workbooks.Open(path)
                xlWorkSheet = xlWorkBook.Sheets("Sheet")
                xlWorkSheet.Range("A1:XFD1").EntireColumn.AutoFit()

                xlWorkBook.Save()
                xlWorkBook.Close()
                xlApp.Quit()
            End If


            MessageBox.Show("Data Exported to :" + vbCrLf + SaveFileDialog1.FileName, "Business Intelligence Portal", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1)
            SaveFileDialog1.FileName = Nothing

        End If
    Catch ex As Exception
    End Try

Answer 3

selectgridvalues函数以数据表格式返回数据库中的值。在显示按钮中调用此函数可在gridcontrol中设置这些值。导出按钮将值以.xlsx格式导出到Excel工作表中

    //function to get values from DataTable to gridControl Devexpress
    public DataTable selectgridvalues()
    {
      SqlConnection con;
      con = new SqlConnection();
      con.ConnectionString = "server='SERVER';uid='sa';pwd='1234';database='DBName'";
      con.Open();

      SqlDataAdapter adp = new SqlDataAdapter("select * from Tablename order by id ", con);
      DataTable dt = new DataTable();
      adp.Fill(dt);
      gridControl1.DataSource =dt;
    }


    //code on showdatagridview values button
    public void buttonShow_Click(object sender, EventArgs e)
    {         
        gridControl1.DataSource = selectgridvalues();
    }


     //code on export to excel button
     private void buttonExportExcel_Click(object sender, EventArgs e)
    {
        SaveFileDialog saveFileDialogExcel = new SaveFileDialog();
        saveFileDialogExcel.Filter = "Excel files (*.xlsx)|*.xlsx";
        if (saveFileDialogExcel.ShowDialog() == DialogResult.OK)
        {
            string exportFilePath = saveFileDialogExcel.FileName;
            gridControl1.DataSource = selectgridvalues();
            gridControl1.ExportToXlsx(exportFilePath);
        }

    }

DevExpress将GridView导出到Excel

3 个答案: