可以在代码隐藏中以百分比更改Gridview列的宽度吗？

Question

我有gridview5列,最后一列只对某些成员可见.我希望当最后一列gvMessageList.Columns[4]不可见时,它的宽度百分比应该给第一列gvMessageList.Columns[0].

请让我知道,怎么可能.

我GridView的如下:

<asp:GridView ID="gvMessageList" runat="server" Width="100%" AutoGenerateColumns="false" AllowPaging="true" AllowSorting="true"
    DataKeyNames="MESSAGE_ID" CellPadding="4" PageSize="51" EmptyDataText="No Records Found." OnSorting="gvMessageList_Sorting"
    OnPageIndexChanging="gvMessageList_PageIndexChanging" OnRowDataBound="gvMessageList_RowDataBound" GridLines="None"
    CssClass="table table-bordered table-condensed table-hover table-striped">
    <Columns>
        <asp:TemplateField HeaderText="Subject" HeaderStyle-Width="30%" SortExpression="MESSAGE_SUBJECT" HeaderStyle-BackColor="#D9EDF7"
            HeaderStyle-ForeColor="#0088CC">
            <ItemTemplate>
                <asp:HyperLink ID="hlnkMessageSubject" runat="server" Text='<%# ((System.Data.DataRowView)Container.DataItem)["MESSAGE_SUBJECT"] %>'
                    NavigateUrl='<%# ((System.Data.DataRowView)Container.DataItem)["MESSAGE_URL"] %>'>
                </asp:HyperLink>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="From" HeaderStyle-Width="14%" SortExpression="MESSAGE_FROM" HeaderStyle-BackColor="#D9EDF7"
            HeaderStyle-ForeColor="#0088CC">
            <ItemTemplate>
                <asp:HyperLink ID="hlinkUser" runat="server" Text='<%#((System.Data.DataRowView)Container.DataItem)["MESSAGE_FROM"] %>'
                    NavigateUrl='<%#((System.Data.DataRowView)Container.DataItem)["FROM_URL"] %>'>
                </asp:HyperLink>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="CREATION_DATE" HeaderText="On" HeaderStyle-Width="15%" HeaderStyle-BackColor="#D9EDF7" HeaderStyle-ForeColor="#0088CC"
            SortExpression="CREATION_DATE" />
        <asp:TemplateField HeaderText="To" HeaderStyle-Width="21%" HeaderStyle-BackColor="#D9EDF7" HeaderStyle-ForeColor="#0088CC">
            <ItemTemplate>
                <asp:Label ID="lblTo" runat="server">
                </asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Broadcast" HeaderStyle-Width="20%" Visible="false" HeaderStyle-BackColor="#D9EDF7" HeaderStyle-ForeColor="#0088CC">
            <ItemTemplate>
                <asp:Label ID="lblBroadcast" runat="server">
                </asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

在C#Codebehind中:

我想在这里增加第一列的百分比:

gvMessageList.Columns[4].HeaderStyle.Dispose();
gvMessageList.Columns[4].Visible = false;

是否可以通过使用gvMessageList.Columns[0].HeaderStyle.Width = ??或类似的东西.

Answer 1

为width属性指定一个新的单元类型.第一个参数是您想要的宽度,第二个参数是要使用的测量值.在下面的示例中,我告诉列是表格宽度的50%.

gvMessageList.Columns[4].HeaderStyle.Width = New Unit(50, UnitType.Percentage);