Question

我在ASP.NET页面中有一个Grid，我有一个Export按钮。单击“导出”按钮时，它将执行下面的方法，并使用网格中的数据填充Excel文档。但它只会填充第1页上的数据。如果我有100个项目和10个页面，它只会执行第1页。我认为它会做所有而不只是显示的那些。知道为什么会这样做吗？

由于

    private void fillDocument()
      {
        string lFilename = Leads.xls";
        string lDistributorFolder = Server.MapPath(".") + "\\Portals\\0\\Distributors\\" + _currentUser.UserID.ToString() + "\\";
        string lTemplateFolder = System.Configuration.ConfigurationManager.AppSettings["Templates"];
        System.IO.Directory.CreateDirectory(lDistributorFolder);

        File.Copy(lTemplateFolder + lFilename, lDistributorFolder + lFilename, true);
        string lConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + lDistributorFolder + "\\" + lFilename + ";Extended Properties=\"Excel 8.0;HDR=YES;\"";
        DbProviderFactory lFactory = DbProviderFactories.GetFactory("System.Data.OleDb");
        int lSequence = 0;

        using (DbConnection lConnection = lFactory.CreateConnection())
        {
            lConnection.ConnectionString = lConnectionString;
            lConnection.Open();

        foreach (GridDataItem lItem in grdLeadList.Items)
          {
            lSequence++;

            using (DbCommand lCommand = lConnection.CreateCommand())
              {
                   lCommand.CommandText = "INSERT INTO [Leads$] ";
                   lCommand.CommandText += "(F1,F2,F3,F4,F5,F6,F7,F8,F9,F10,F11,F12,F13,F14,F15,F16,F17,F18,F19,F20,F21) ";
                   lCommand.CommandText += "VALUES(";
                   lCommand.CommandText += "\"" + lSequence.ToString() + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gLeadNumber].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gSource].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gAccountName].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gCreatedOn].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gContactFullName].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gPriority].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gStreet1].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gStreet2].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gZIP].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gCity].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += "\"" + lItem.Cells[_gState].Text.Replace("&nbsp;", " ") + "\",";
                   lCommand.CommandText += ")";
                   lCommand.ExecuteNonQuery();
                 }
              }

             lConnection.Close();
          }
}

Answer 1

网格是否用于以任何方式编辑或操作数据？通常，最好从填充网格的数据中导出值，而不是从网格本身导出。

毕竟，如果网格有分页，那么显示的实际网格只包含单页数据。但是填充它的数据源包含所有内容。

从数据源导出，而不是从UI控件导出。

Answer 2

绑定网格时，只有可见的项目实际上绑定到网格。当您使用分页时，通常会对基础数据源进行另一次调用（您通常必须自己处理此分页）

如果要显示所有数据，当他们单击“导出”按钮时，您应该重新加载数据源并将导出从整个数据源中取消

导出所有数据不仅仅是显示的数据

2 个答案: