我希望有人可以帮助我。我有一个gridview,里面每行都有一个下拉列表。我希望根据行键值的值填充下拉列表。
<asp:GridView ID="gvCart" runat="server" CssClass="table table-striped" DataKeyNames="UOMSCHDL" OnRowDataBound="gvCart_RowDataBound"
SelectMethod="gvCart_GetData" AutoGenerateColumns="false" DeleteMethod="gvCart_DeleteItem" AutoGenerateDeleteButton="true">
<Columns>
<asp:TemplateField>
<HeaderTemplate>Item #</HeaderTemplate>
<ItemTemplate>
<%#Eval("ITEMNMBR")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>UOM</HeaderTemplate>
<ItemTemplate>
<asp:DropDownList ID="ddlUOM" runat="server"AutoPostBack="true" SelectMethod="getUOM" CssClass="dropdown-toggle"
DataTextField="UOFM" DataValueField="UOFM" AppendDataBoundItems="true">
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
以下是填充下拉列表的代码:
Public Function getUOM() As IEnumerable
'the following code has a red sqiggly under RowIndex because it isn't
'declared. I get that, but what do I use to get the RowIndex
Dim uom As String = gvCart.DataKeys(RowIndex).Value.ToString()
'this query works if I "hardcode" the where to = "roll" but I want
' it to be dynamic
Dim query = From i In db.IV40202
Where i.UOMSCHDL = uom ' "roll"
Order By i.SEQNUMBR
Return query.ToList()
End Function
正如我在代码中评论的那样,我不知道如何获取RowIndex。
先谢谢你的帮助。
我想我会为有兴趣的人发布完整的解决方案。
<asp:TemplateField>
<HeaderTemplate>UOM</HeaderTemplate>
<ItemTemplate>
<asp:DropDownList ID="ddlUOM" runat="server" CssClass="dropdown-toggle"></asp:DropDownList>
</ItemTemplate>
并在后面的代码中:
Public Function getUOM(uom As String) As IEnumerable
Dim myUOM As String = Trim(uom)
'ultimately this needs to be based on the uomschdl of each item
Dim query = From i In db.IV40202
Where i.UOMSCHDL = myUOM ' "roll"
Order By i.SEQNUMBR
Select New With {
.UOFM = i.UOFM
}
Return query.ToList()
End Function
Protected Sub gvCart_RowDataBound(sender As Object, e As GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.DataRow Then
Dim uom As String = gvCart.DataKeys(e.Row.RowIndex).Value.ToString()
Dim ddlUOM As DropDownList = TryCast(e.Row.FindControl("ddlUOM"), DropDownList)
ddlUOM.DataSource = getUOM(uom)
ddlUOM.DataTextField = "UOFM"
ddlUOM.DataValueField = "UOFM"
ddlUOM.DataBind()
End If
End Sub
答案 0 :(得分:0)
您希望将对getUOM(rowIndex)的调用移到gvCart_RowDataBound处理程序中,如下所示:
protected Sub gvCart_RowDataBound(Dim sender As Object, Dim e As GridViewRowEventArgs)
Dim rowIndex As Int = e.Row.RowIndex
getUOM(rowIndex)
End Sub