JQGrid:用于从外部表中选择项的下拉列表-DataValueField vs DataTextField

对于那些使用javascrpt而不是asp.net包装器的用户,javascript的方式是使用formatter和UnformMatter:

柱模型:

编辑选项:{value:'1:Type1;2:类型2;3:类型3;4:类型4;5:Type5'}, 格式化程序:showTextFmatter,未格式化:未格式化showtext,

我的格式化程序,您应该编写自己的格式,如下所示:

    function showTextFmatter (cellvalue, options, rowObject)   
    {  
       var vts={};
       if(options.colModel.editoptions.values==undefined)
       {
           vtStr = options.colModel.editoptions.value.split(';');
           for(var i =0;i<vtStr.length;i++)
           {
              kv = vtStr[i].split(':');
              vts[kv[0]]=vtStr[i]; 
           }
           options.colModel.editoptions.values = vts;
       }
       return options.colModel.editoptions.values[cellvalue];   
    }   
    function  unformatShowText (cellvalue, options)   
    { 
       return cellvalue.split(':')[0];  
    }  

在这里找到了一个很好的解决方案: http://www.trirand.net/forum/default.aspx?g=posts&t=168

这个想法是为了处理这个问题 CellBinding 事件,并查找与单元格包含的ID对应的文本。

protected void JQGrid1_CellBinding(object sender, Trirand.Web.UI.WebControls.JQGridCellBindEventArgs e)
   {
      if (e.ColumnIndex == 1) // index of your dropdown column
      {
         e.CellHtml = LookupText(e.CellHtml);
      } 
   }

LookupText EditValues (例如。 1:One;2:Two;3:Three

我已经将所有这些逻辑包装到一个自定义列类(在VB.NET中)中,该类还根据您给出的SQL命令填充下拉列表。

Public Class JqGridDropDownColumn
    Inherits Trirand.Web.UI.WebControls.JQGridColumn

    Private _SelectCommand As String
    '' /* The SQL command used to populate the dropdown. */
    '' /* We assume that the first column returned contains the value (e.g. BudgetID)  and the second column contains the text (e.g. Title). */
    Public Property SelectCommand() As String
        Get
            Return _SelectCommand
        End Get
        Set(ByVal value As String)
            _SelectCommand = value
        End Set
    End Property

    Private _DropDownNullText As String
    Public Property DropDownNullText() As String
        Get
            Return _DropDownNullText
        End Get
        Set(ByVal value As String)
            _DropDownNullText = value
        End Set
    End Property

    Private WithEvents Grid As JQGrid
    Private DropDownValues As DataTable

    Sub Init(g)
        Grid = g
        DropDownValues = ExecuteDataset(cs, CommandType.Text, Me.SelectCommand).Tables(0)
        DropDownValues.PrimaryKey = New DataColumn() {DropDownValues.Columns(0)}
        Me.EditValues = BuildEditValues(DropDownValues)
    End Sub

    '' /* Builds a string of the form "1:One;2:Two;3:Three" for use by the EditValues property. */
    '' /* This assumes that Table consists of two columns corresponding to the Value (e.g. BudgetID) and Text (e.g. Title), in that order. */ 
    Protected Function BuildEditValues(ByVal Table As DataTable) As String
        Dim Result As String = ""
        If Not String.IsNullOrEmpty(Me.DropDownNullText) Then
            Result = String.Format(":{0}", Me.DropDownNullText)
        End If
        For Each Row As DataRow In Table.Rows
            If Len(Result) > 0 Then Result &= ";"
            Result &= Row(0) & ":" & Row(1)
        Next
        Return Result
    End Function


    Private Sub Grid_CellBinding(ByVal sender As Object, ByVal e As Trirand.Web.UI.WebControls.JQGridCellBindEventArgs) Handles Grid.CellBinding
        '' /* Display the text (e.g. Title) rather than the value (e.g. BudgetID) */
        If Grid.Columns(e.ColumnIndex) Is Me Then
            e.CellHtml = LookupText(e.CellHtml)
        End If
    End Sub

    Private Function LookupText(ByVal Value As String) As String
        Dim MatchingRow As DataRow = DropDownValues.Rows.Find(Value)
        If MatchingRow IsNot Nothing Then
            Return MatchingRow(1) '' /* Column 1 is assumed to contain the text */
        Else
            Return ""
        End If
    End Function
End Class

你只需要打个电话 DropdownColumn.Init(MyGrid) 从网格的 init 事件希望这对别人有帮助。

赫伯,问题是您使用的是datafield=“ItemTypeID”。你必须把它改成类似CategoryTitle的东西。

这里还有一个例子 http://www.trirand.net/examples/editing_data/edit_types/default.aspx