C Sharp方法条件

问题描述：

这个Param（）方法这个条件意味着什么 if（DVLocal.Count> 0）

Tn this Param() method what this condition means if(DVLocal.Count > 0)

private string Param()
   {

       for (int i = 0; i < grdViewMachinaryDetailsApproval.Rows.Count; i++)
       {
           CheckBox cb = (CheckBox)grdViewMachinaryDetailsApproval.Rows[i].Cells[2].FindControl("chkSelect");
           if (cb != null)
           {
               if (cb.Checked)
               {
                   ConManager.DBConnection("TERMSHR");
                   ConManager.BeginTransaction();
                   DTLocal = new DataTable();
                   DVLocal = new DataView();

                   strSQL = "select * from tblMachinaryDetails where MDCode = '" + grdViewMachinaryDetailsApproval.Rows[i].Cells[3].Text.ToString() + "'";
                   ConManager.OpenDataTableThroughAdapter(strSQL, out DTLocal, true);
                   DTLocal.TableName = "MachinaryDetails";
                   DVLocal.Table = DTLocal;

                   if (DVLocal.Count > 0)
                   {

                       DRLocal = DVLocal[0].Row;
                       DRLocal.BeginEdit();
                       DRLocal["StateStatus"] = ddlAction.SelectedValue.Trim();
                       DRLocal["ApprovedDate"] = System.DateTime.Now.ToString();
                       DRLocal.EndEdit();

                   }
                   ConManager.SaveDataTableThroughAdapter(ref DTLocal, true);

               }

           }
       }

       return strParam;
   }

答

DVLocal是一个数据视图，因此更容易找到的方法是使用Google： GoogleDataView.Count [ ^ ] - 第一个命中是指向MSDN的链接： MSDN：DataView.Count Property [ ^ ]告诉你所有相关信息。

说的是它返回应用RowFilter和RowStateFilter后DataView中的记录数。

所以行：

DVLocal is a Dataview, so the easier way to find out is to use Google: Google "DataView.Count"[^] - the first hit is a link to MSDN: MSDN: "DataView.Count Property"[^] which tells you all about it.

What is says is that it returns "the number of records in the DataView after RowFilter and RowStateFilter have been applied."

So the line:

if (DVLocal.Count > 0)

将为true，因此至少有一行要处理的行。

will be true if there are any rows in the view, so at least one line to process.

C Sharp方法条件

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