Question

现在我有一个带有以下代码的Gridview;

<asp:GridView CssClass="grdInspStra" ID="grdInspStra" runat="server"  AutoGenerateColumns="false" OnRowCreated="grdInspStra_RowCreated">
    <AlternatingRowStyle CssClass="grdItemEven" />
    <Columns>
        <asp:TemplateField HeaderText="Zone Code" ItemStyle-CssClass="grdItemCenter">
            <ItemTemplate>
                <asp:Label ID="lblZone" runat="server" Text='<%# Eval("ZoneCode")%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Group Code" ItemStyle-CssClass="grdItemCenter">
            <ItemTemplate>
                <asp:Label ID="lblGroup" runat="server" Text='<%# Eval("GroupCode")%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Component Code" ItemStyle-CssClass="grdItemCenter">
            <ItemTemplate>
                <asp:Label ID="lblComp" runat="server" Text='<%# Eval("ComponentCode")%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Component Tag No." ItemStyle-CssClass="grdItemCenter">
           <ItemTemplate>
                <asp:Label ID="lblCompTagNo" runat="server" Text='<%# Eval("ComponentTagRef")%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Risk Category" ItemStyle-CssClass="grdItemCenter">
            <ItemTemplate>
                <asp:Label ID="lblRiskCat" runat="server" Text='<%# Eval("RiskCategory")%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Proposed Interval" ItemStyle-CssClass="grdItemCenter">
            <ItemTemplate>
                <asp:Label ID="lblInterval" runat="server" Text='<%# Eval("ProposedInterval")%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Latest Date" ItemStyle-CssClass="grdItemCenter">
            <ItemTemplate>
                <asp:Label ID="lblDateLatest" runat="server" Text='<%# Eval("DateLI")%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="H1" ItemStyle-CssClass="grdItemCenter">
            <ItemTemplate>
                <asp:Label ID="lblFirstHalf0" runat="server" Text='<%# Eval("FirstHalf0")%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="H2" ItemStyle-CssClass="grdItemCenter">
            <ItemTemplate>
                <asp:Label ID="lblSecondHalf0" runat="server" Text='<%# Eval("SecondHalf0")%>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

但是我试图消除这段代码;

<asp:TemplateField HeaderText="H1" ItemStyle-CssClass="grdItemCenter">
    <ItemTemplate>
        <asp:Label ID="lblFirstHalf0" runat="server" Text='<%# Eval("FirstHalf0")%>'></asp:Label>
    </ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="H2" ItemStyle-CssClass="grdItemCenter">
    <ItemTemplate>
        <asp:Label ID="lblSecondHalf0" runat="server" Text='<%# Eval("SecondHalf0")%>'></asp:Label>
    </ItemTemplate>
</asp:TemplateField>

这是因为名为H1和H2的列需要从0 =＆gt;重复。 30，以便在代码末尾标签名称变为;

<asp:Label ID="lblFirstHalf30" runat="server" Text='<%# Eval("FirstHalf30")%>'></asp:Label>
<asp:Label ID="lblSecondHal30" runat="server" Text='<%# Eval("SecondHalf30")%>'></asp:Label>

我设法使用Page_Load;

创建列

TemplateField tfield;
for (int i = 0; i < 31; i++)
{
    tfield = new TemplateField();
    tfield.HeaderText = "H1";
    grdInspStra.Columns.Add(tfield);

    tfield = new TemplateField();
    tfield.HeaderText = "H2";
    grdInspStra.Columns.Add(tfield);
 }

但是，我不知道如何使用C＃放置标签并从SQL服务器绑定数据。

我尝试从How to add TemplateField programmatically向我们举例，但我得到的是错误的值，因为它只是不循环。（注意我只测试将数据从服务器放到H2）

我尝试的是什么;

TemplateField tfield;
for (int i = 0; i < 31; i++)
{
    tfield = new TemplateField();
    tfield.HeaderText = "H1";
    tfield.ItemStyle.CssClass = "grdItemCenter";
    grdInspStra.Columns.Add(tfield);

    tfield = new TemplateField();
    tfield.HeaderText = "H2";
    tfield.ItemStyle.CssClass = "grdItemCenter";
    tfield.ItemTemplate = new LabelColumn();
    grdInspStra.Columns.Add(tfield);
}

class LabelColumn : ITemplate
{
    public void InstantiateIn(Control container)
    {
        Label label = new Label();
        label.ID = "lblSecondHalf";
        label.DataBinding += new EventHandler(label_DataBinding);
        container.Controls.Add(label);
    }

    private void label_DataBinding(Object sender, EventArgs e)
    {
        Label label = (Label)sender;
        GridViewRow row = (GridViewRow)label.NamingContainer;
        label.Text = DataBinder.Eval(row.DataItem, "SecondHalf0").ToString();
    }
}

有人可以帮我解决这个问题吗？

Answer 1

下午休息后，我设法解决了这个问题。

在class LabelColumn : ITemplate中添加int i，示例;

class LabelColumn : ITemplate
{
    int i;

    public LabelColumn(int i)
    {
        this.i = i;
    }

    public void InstantiateIn(Control container)
    {
        Label label = new Label();
        label.ID = "lblSecondHalf" + i;
        label.DataBinding += new EventHandler(label_DataBinding);
        container.Controls.Add(label);
    }

    private void label_DataBinding(Object sender, EventArgs e)
    {
        Label label = (Label)sender;
        GridViewRow row = (GridViewRow)label.NamingContainer;
        label.Text = DataBinder.Eval(row.DataItem, "SecondHalf" + i).ToString();
    }
}

制作一个动态Gridview表，其中列需要使用循环填充

1 个答案: