c# - 在代码隐藏中为网格中的复选框分配一个值

Question

我在 asp.net 中有以下网格

<asp:GridView ID="grdDWlocations" CssClass="table table-hover table-striped" runat="server" GridLines="None" ShowHeaderWhenEmpty="True"
    EmptyDataText="No data found..." AutoGenerateColumns="False">
    <Columns>
        <asp:TemplateField HeaderText="" Visible="true">
            <HeaderTemplate>
                <asp:CheckBox ID="allDWlocchk" runat="server" Checked="true" Width="10px" onclick="CheckAllgrdReqDW(this)"></asp:CheckBox>
            </HeaderTemplate>
            <ItemTemplate>
                <asp:CheckBox ID="chk_DWlocReq" runat="server" Checked="true" Width="5px" OnCheckedChanged="chk_Req_CheckedChangedDW_Click" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Code">
            <ItemTemplate>
            <asp:Label ID="lbl_DWCode" runat="server" Text='<%# Bind("Ml_loc_cd") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Description">
            <ItemTemplate>
                <asp:Label ID="lbl_DWDescription" runat="server" Text='<%# Bind("Ml_loc_desc") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

我想在后面的代码中为“chk_DWlocReq”赋值

像这样

foreach (GridViewRow dgvr in grdDWlocations.Rows)
{
    (CheckBox)dgvr.FindControl("chk_DWlocReq")=true;                                                 
}

但是上面一个无效，这怎么能正常呢？

Answer 1

我认为您的代码必须更改为:

foreach (GridViewRow dgvr in grdDWlocations.Rows)
{
    ((CheckBox)dgvr.FindControl("chk_DWlocReq")).Checked=true;
}