如何在DataField中的GridView中查找BoundField?
问题描述:
我想在GridView中改变第十个BoundField后面的CSS类,但我想通过DataField找到它(即使用字符串作为索引)。如何在DataField中的GridView中查找BoundField?
protected void gdDeliveryDates_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
string DeliveryDue = DataBinder.Eval(e.Row.DataItem, "DeliveryDue").ToString();
((LinkButton) e.Row.FindControl("PostDelivery")).Enabled = !String.IsNullOrEmpty(DeliveryDue);
//e.Row.Cells[9].CssClass= "badge";
}
}
在上面的代码我已注释了到目前为止我发现的唯一的解决方案,这对我来说是不可接受的,因为列数(即,如上文所指定的列9)是非常不稳定。我更愿意通过DataField(字符串,在这种情况下,"MailCount"
,你会在网格声明中进一步看到)中找到该列。下面是我的网格的样子:
<asp:GridView ID="gdDeliveryDates" runat="server" AllowPaging="False" AllowSorting="True" DataSourceID="odsDeliveryDates" AutoGenerateColumns="False" CssClass="table table-striped table-bordered table-hover" OnRowCommand="gdDeliveryDates_RowCommand" OnSelectedIndexChanged="gdDeliveryDates_SelectedIndexChanged" DataKeyNames="PackageOfferedID, PackageID, PostageID, PackageNumber, PackageTitle, PostageName, Section, PostageStart, PostageEnd, DeliveryDue, LName, MailCount, Location" OnRowDataBound="gdDeliveryDates_RowDataBound" >
<Columns>
<asp:BoundField DataField="PackageID" HeaderText="PackageID" Visible="False" ReadOnly="True" SortExpression="PackageID" />
<asp:BoundField DataField="PackageOfferedID" HeaderText="PackageOfferedID" Visible="False" ReadOnly="True" SortExpression="PackageOfferedID" />
<asp:BoundField DataField="PostageID" HeaderText="PostageID" Visible="False" ReadOnly="True" SortExpression="PostageID" />
<asp:BoundField DataField="PackageNumber" HeaderText="Package" Visible="True" ReadOnly="True" SortExpression="PackageNumber" HeaderStyle-CssClass="visible-xs visible-sm visible-md visible-lg" ItemStyle-CssClass="visible-xs visible-sm visible-md visible-lg" />
<asp:BoundField DataField="PostageName" HeaderText="Postage" ReadOnly="True" SortExpression="PostageName" HeaderStyle-CssClass="visible-sm visible-md visible-lg" ItemStyle-CssClass="visible-sm visible-md visible-lg"/>
<asp:BoundField DataField="Section" HeaderText="Section" ReadOnly="True" SortExpression="Section" HeaderStyle-CssClass="visible-xs visible-sm visible-md visible-lg" ItemStyle-CssClass="visible-xs visible-sm visible-md visible-lg" />
<asp:BoundField DataField="PostageStartDate" HeaderText="Start Date" ReadOnly="True" SortExpression="PostageStartDate" DataFormatString="{0:MM/dd/yyyy}" HeaderStyle-CssClass="visible-md visible-lg" ItemStyle-CssClass="visible-md visible-lg" />
<asp:BoundField DataField="PostageEndDate" HeaderText="End Date" ReadOnly="True" SortExpression="PostageEndDate" DataFormatString="{0:MM/dd/yyyy}" HeaderStyle-CssClass="visible-md visible-lg" ItemStyle-CssClass="visible-md visible-lg" />
<asp:BoundField DataField="DeliveryDueDate" HeaderText="Delivery Due" ReadOnly="True" SortExpression="DeliveryDueDate" DataFormatString="{0:MM/dd/yyyy}" HeaderStyle-CssClass="visible-xs visible-sm visible-md visible-lg" ItemStyle-CssClass="visible-xs visible-sm visible-md visible-lg" />
<asp:BoundField DataField="MailCount" HeaderText="#" Visible="True" ReadOnly="True" SortExpression="MailCount" HeaderStyle-CssClass="visible-lg" ItemStyle-CssClass="visible-lg" />
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="PostDelivery" runat="server" CausesValidation="false" CommandName="Add"
Text="Post Delivery" CommandArgument='<%# DataBinder.Eval(Container, "RowIndex") %>'
CssClass="buttonLayout" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="LName" HeaderText="LName" Visible="False" ReadOnly="True" SortExpression="LName" />
<asp:BoundField DataField="Location" HeaderText="Location" Visible="False" ReadOnly="True" SortExpression="Location" />
</Columns>
</asp:GridView>
答
这是不可能的,但你可以试试这个方法:
public int FindIndexByDataField(this GridView gv, string datafieldname)
{
int index = -1, cnum = 0;
foreach (DataControlField col in gv.Columns)
{
if (col is BoundField)
{
BoundField coll = (BoundField)gv.Columns[cnum];
if (coll.DataField == datafieldname)
{
index = cnum;
break;
}
}
cnum++;
}
return index;
}
并调用上面的方法是这样的:
e.Row.Cells[FindIndexByDataField("MailCount")].CssClass= "badge";
这是伟大的!我做了如下的修改,主要是因为数据字段列名是什么,我更愿意参考的,而不是在GridView中使用的标题标题: 公共静态INT GetIndexByName(GridView的GV,串dataFieldName) { \t INT index = -1,cnum = 0; \t的foreach(在gv.Columns的DataControlField COL) \t { \t \t如果(COL是绑定列) \t \t { \t \t \t的BoundField COLL =(绑定列)gv.Columns [CNUM]; \t \t \t如果(coll.DataField == dataFieldName) \t \t \t { \t \t \t \t指数= CNUM; \t \t \t \t break; \t \t \t} \t \t} \t \t CNUM ++; \t} \t return index; } – ShieldOfSalvation
我已更新DataField,顺便说一句,使用DataField,HeaderText或SortExpression :) – AsifAli72090