使用C将数据从SQL Server移动到Excel＃

Question

我试图通过使用WinForms的C＃表单将数据从SQL Server 2012移动到Excel 2010。我所拥有的数据包含一个名为“Appeal”的列，我希望在Excel工作簿中创建单独的工作表。我想用“上诉”的名称标签标签。我似乎无法得到的部分实际上是将数据放入我刚刚创建和标记的相关选项卡中。任何有更多经验的人都能帮助我吗？请注意，表格和值是实际表格的简化版本。

CREATE TABLE [dbo].[Appeals](
    [Appeal] [nchar](10) NULL, 
    [Member_ID] [varchar](10) NULL, 
    [Amount] [money] NULL, 
    [DateGiven] [date] NULL 
) ON [PRIMARY] 


insert into Appeals values ('6Y','101',50,'2-15-2016') 
insert into Appeals values ('6Y','209',100,'2-14-2016') 
insert into Appeals values ('6Y','218',200,'2-12-2016') 
insert into Appeals values ('7G','102',300,'1-15-2016') 
insert into Appeals values ('7G','209',20,'2-21-2016') 
insert into Appeals values ('WR','108',50,'1-22-2016') 
insert into Appeals values ('WR','198',100,'1-29-2016') 
insert into Appeals values ('WR','303',500,'1-31-2016') 
insert into Appeals values ('WR','312',150,'7-19-2016') 


using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 
using System.Data.SqlClient; 
using Excel = Microsoft.Office.Interop.Excel; 


     private void button7_Click(object sender, EventArgs e) 
     { 
      SqlConnection cnn; 
      string connectionString = null; 

      object misValue = System.Reflection.Missing.Value; 

      connectionString = "data source=D7010-H14NBZ1\\SQLEXPRESS;initial catalog=iTest;user id=TestUser;password=testPW;"; 
      StringBuilder query = new StringBuilder(); 

      cnn = new SqlConnection(connectionString); 
      cnn.Open(); 
      query.Append("SELECT  Appeal, Member_ID, "); 
      query.Append("Amount, DateGiven "); 
      query.Append("FROM dbo.Appeals "); 
      query.Append("WHERE  (Appeal IN (N'6Y', N'7G', N'WR')) "); 
      query.Append("ORDER BY Appeal DESC"); 
      SqlDataAdapter dscmd = new SqlDataAdapter(query.ToString(), cnn); 
      DataTable dt = new DataTable(); 
      dscmd.Fill(dt); 

      Excel.Application oXL; 
      Excel._Workbook oWB; 
      Excel._Worksheet oSheet; 

      oXL = new Excel.Application(); 
      oXL.Visible = true; 

      oWB = (Excel._Workbook)(oXL.Workbooks.Add(misValue)); 
      oSheet = (Excel._Worksheet)oWB.ActiveSheet; 

      try 
      { 
       DataTable dtAppCode = 
         dt.DefaultView.ToTable(true, "Appeal"); 

       foreach (DataRow appcode in dtAppCode.Rows) 
       { 
        oSheet = (Excel._Worksheet)oXL.Worksheets.Add(); 
        oSheet.Name = appcode[0].ToString().Replace(" ", ""). 
         Replace(" ", "").Replace("/", ""). 
          Replace("\\", "").Replace("*", ""); ; 
       } 
      } 
      catch (Exception ex) 
      { 
       Console.WriteLine(ex.Message); 
      } 
      finally 
      { 
       GC.Collect(); 
      } 

      oXL.Visible = true; 
      oXL.UserControl = true; 

      oWB.SaveAs(@"H:\Appeals2.xlsx", 
       AccessMode: Excel.XlSaveAsAccessMode.xlShared); 

     } 
     } 
    } 

Answer 1

这被称为使用C＃将数据从SQL数据库导出到Excel。这很容易实现和理解。

CodePlex提供了一个称为ClosedXML的API。你可以在这里找到它：https://closedxml.codeplex.com/

ClosedXML允许创建不同的工作簿和工作表来导出SQL数据。

使用ClosedXML DLL，您可以非常轻松地导出数据。

protected void button7_Click(object sender, EventArgs e) 
    { 
    string connectionstring; 

    connectionstring = """data source=D7010-H14NBZ1\\SQLEXPRESS;initial catalog=iTest;user id=TestUser;password=testPW;"; 

    string query = "SELECT Appeal, Member_ID, Amount, DateGiven FROM dbo.Appeals WHERE Appeal IN (N'6Y', N'7G', N'WR') ORDER BY Appeal DESC"; 

    SqlConnection connection = new SqlConnection(connectionstring); 
     connection.Open(); 

     SqlCommand command = new SqlCommand(query, connection); 

     DataTable data = new DataTable(); 

     using (SqlDataAdapter a = new SqlDataAdapter(command)) 
     { 
      a.Fill(data); 
      using (XLWorkbook wb = new XLWorkbook()) 
      { 
       wb.Worksheets.Add(data, "Excel Export"); 

       Response.Clear(); 
       Response.Buffer = true; 
       Response.Charset = ""; 
       Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"; 
       Response.AddHeader("content-disposition", "attachment;filename=Excel Export.xlsx"); 
       using (MemoryStream MyMemoryStream = new MemoryStream()) 
       { 
        wb.SaveAs(MyMemoryStream); 
        MyMemoryStream.WriteTo(Response.OutputStream); 
        Response.Flush(); 
        Response.End(); 
       } 
      } 
     } 
} 

这将帮助你肯定的:)

Answer 2

using System; 
    using System.Collections.Generic; 
    using System.ComponentModel; 
    using System.Data; 
    using System.Drawing; 
    using System.Linq; 
    using System.Text; 
    using System.Windows.Forms; 
    using System.Data.SqlClient; 
    using Excel = Microsoft.Office.Interop.Excel; 

    namespace WindowsFormsApplication8 
    { 
     public partial class Form1 : Form 
     { 
      public Form1() 
      { 
       InitializeComponent(); 
      } 

      private void button1_Click(object sender, EventArgs e) 
      { 
       SqlConnection cnn; 
       string connectionString = null; 
       string data = null; 
       int i = 0; 
       int j = 0; 
       int h = 1; 
       int Appeal_ID = 20; 
       object misValue = System.Reflection.Missing.Value; 

       label1.Text = "Processing......"; 

       connectionString = "data source=D7010-H14NBZ1\\SQLEXPRESS;initial catalog=itest;user id=xxxx;password=xxxx;"; 
       StringBuilder query = new StringBuilder(); 

       cnn = new SqlConnection(connectionString); 
       cnn.Open(); 

       Excel.Application oXL; 
       Excel._Workbook oWB; 
       Excel._Worksheet oSheet; 

       oXL = new Excel.Application(); 
       oWB = (Excel._Workbook)(oXL.Workbooks.Add(misValue)); 
       oSheet = (Excel._Worksheet)oWB.ActiveSheet; 

       for (h = 48; h >= 1; h--) 
       { 
        query.Append("SELECT  TOP (100) PERCENT dbo.FDN_GivingAppeal_Main.Appeal_ID, dbo.FDN_GivingAppeal_Main.ID, dbo.FDN_GivingAppeal_Main.Appeal,     dbo.vBoCsContact.MemberType, "); 
        query.Append("dbo.vBoCsContact.Title, dbo.vBoCsContact.Prefix, dbo.vBoCsContact.FirstName, dbo.vBoCsContact.MiddleName AS MI, dbo.vBoCsContact.LastName, "); 
        query.Append("dbo.vBoCsContact.Suffix, dbo.vBoCsContact.Designation, dbo.vBoCsContact.Informal, dbo.vBoCsContact.Email, dbo.vBoCsContact.Company, "); 
        query.Append("dbo.vBoCsAddress.Address1, dbo.vBoCsAddress.Address2, dbo.vBoCsAddress.City, dbo.vBoCsAddress.StateProvince, dbo.vBoCsAddress.Zip, "); 
        query.Append("dbo.vBoCsAddress.Country, dbo.vBoCsAddress.Phone, dbo.FDN_GivingAppeal_Main.Amount AS YrTotal_LastGivingYr,    dbo.FDN_GivingAppeal_Main.LastTransDate, "); 
        query.Append("dbo.FDN_GivingAppeal_Main.LastTransAmt, dbo.FDN_GivingAppeal_Main.LargestGiving, dbo.FDN_GivingAppeal_Main.LifetimeTotal, "); 
        query.Append("dbo.FDN_GivingAppeal_Main.FiscalYear AS LastGivingYr, dbo.FDN_GivingAppeal_Main.CapitalCampaign, dbo.FDN_GivingAppeal_Main.P2GScore, "); 
        query.Append("dbo.FDN_GivingAppeal_Main.InnerCircle "); 
        query.Append("FROM   dbo.FDN_GivingAppeal_Main INNER JOIN "); 
        query.Append("dbo.FDN_AppealCode_Sort ON dbo.FDN_GivingAppeal_Main.Appeal_ID = dbo.FDN_AppealCode_Sort.ID AND "); 
        query.Append("dbo.FDN_GivingAppeal_Main.Appeal = dbo.FDN_AppealCode_Sort.Appeal_code INNER JOIN "); 
        query.Append("dbo.vBoCsContact ON dbo.FDN_GivingAppeal_Main.ID = dbo.vBoCsContact.ID INNER JOIN "); 
        query.Append("dbo.vBoCsAddress ON dbo.vBoCsContact.ID = dbo.vBoCsAddress.ID "); 
        query.Append("WHERE (dbo.vBoCsAddress.PreferredMail = 1) AND (dbo.vBoCsAddress.BadAddress <> 'BAD') AND (dbo.FDN_GivingAppeal_Main.Appeal_ID = " +    Appeal_ID + ") AND Appeal_Sort in(" + h + ") "); 
        query.Append("ORDER BY dbo.FDN_AppealCode_Sort.Appeal_Sort desc, dbo.vBoCsContact.LastName, dbo.vBoCsContact.FirstName; "); 
        SqlDataAdapter dscmd = new SqlDataAdapter(query.ToString(), cnn); 
        DataTable dt = new DataTable(); 
        dscmd.Fill(dt); 
        query.Clear(); 

        try 
        { 

         oSheet = (Excel._Worksheet)oXL.Worksheets.Add(); 
         oSheet.Name = dt.Rows[0]["Appeal"].ToString().Replace(" ", ""). 
          Replace(" ", "").Replace("/", ""). 
           Replace("\\", "").Replace("*", ""); 


         for (i = 0; i <= dt.Rows.Count - 1; i++) 
         { 
          for (j = 0; j <= dt.Columns.Count - 1; j++) 
          { 
           data = dt.Rows[i].ItemArray[j].ToString(); 
           oSheet.Cells[i + 1, j + 1] = data; 

          } 
         } 

        } 

        catch (Exception ex) 
        { 
         Console.WriteLine(ex.Message); 
        } 
        finally 
        { 
         GC.Collect(); 
        } 
       } 


       oWB.SaveAs(@"H:\4862appeals1.xlsx", 
        AccessMode: Excel.XlSaveAsAccessMode.xlShared); 

       oWB.Close(true, misValue, misValue); 
       oXL.Quit(); 

       label1.Text = "Click button to start";  
      } 
     } 
    }