个人中心
gpt4 book ai didi

c# - 如何以编程方式将 Gridview 添加到 UpdatePanel

转载 作者：太空狗 更新时间：2023-10-29 21:46:01 24 4
gpt4 key购买 nike

我不知道如何以编程方式将带有按钮的 GridView 添加到 UpdatePanel。

我可以使用简单的控件(例如按钮和标签)来完成此操作，但是当我尝试添加带有按钮的 GridView 时，会发生完整的 Postback()。

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">


protected override void OnInit(EventArgs e)
{
UpdatePanel up1 = new UpdatePanel();
    up1.ID = "UpdatePanel1";



    Button button1 = new Button();
    button1.ID = "Button1";
    button1.Text = "Submit";
    button1.Click += new EventHandler(Button_Click);


    Label label1 = new Label();
    label1.ID = "Label1";
    label1.Text = "A full page postback occurred.";


    GridView gv1 = new GridView();
    //Where the xml gets bonded to the data grind
    XmlDataSource xds = new XmlDataSource();
    xds.Data = xml;
    xds.DataBind();
    xds.EnableCaching = false;

    gv1.DataSource = xds;
    createButton(gv1, up1);
    gv1.RowCommand += new GridViewCommandEventHandler(CustomersGridView_RowCommand);
    gv1.DataBind();




    up1.ChildrenAsTriggers = true;

    up1.ContentTemplateContainer.Controls.Add(button1);
    up1.ContentTemplateContainer.Controls.Add(label1);

    up1.ContentTemplateContainer.Controls.Add(gv1);

    Page.Form.Controls.Add(up1);
}

protected void Page_Load(object sender, EventArgs e)
{


}
public void CustomersGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "buttonClicked")
    {
        int index = Convert.ToInt32(e.CommandArgument);

    }
}

void createButton(GridView g)
{
    ButtonField tea = new ButtonField();
    tea.ButtonType = ButtonType.Image;
    tea.ImageUrl = "~/checkdailyinventory.bmp";
    tea.CommandName = "buttonClicked";
    tea.HeaderText = "space";
    g.Columns.Add(tea);
}

protected void Button_Click(object sender, EventArgs e)
{
    ((Label)Page.FindControl("Label1")).Text = "Panel refreshed at " +
        DateTime.Now.ToString();
}

</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>UpdatePanel Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="Button2" runat="server" Text="Button" />
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
    </div>
    </form>
</body>
</html>

那么如何以编程方式将带有按钮的 gridview 添加到 UpdatePanel 而不会在单击 GridView 时导致完整的 PostBack()？

编辑:我尝试过的其他事情

   void gv1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    AsyncPostBackTrigger t = new AsyncPostBackTrigger();
    t.ControlID = e.Row.Cells[0].ClientID;
    t.EventName = "blah";
    up1.Triggers.Add(t);
}

最佳答案

嗯根据:

And I don't mind having the update panel created at the design time. I just need to be able to add stuff (like tables that contain gridviews that contain buttons into it) programmatically and then be able to do a partial postback

基本上我使用了您的代码并做了一些小改动:

  • 从 Init 事件中删除绑定(bind)，我在 Load 事件中执行它

  • UpdatePanel 是在设计时使用嵌套面板创建的，您只需将动态控件添加到该面板即可

这段代码可以完成(它适用于我的环境):

ASPX

    <asp:ScriptManager runat="server" />
    <asp:UpdatePanel runat="server">
        <ContentTemplate>
            <asp:Panel runat="server" ID="myPanel">
            </asp:Panel>
            <br />
            <asp:Label runat="server" ID="lblMessage"></asp:Label>
        </ContentTemplate>
    </asp:UpdatePanel>

代码隐藏

    protected void Page_Init(object sender, EventArgs e)
    {
        Button button1 = new Button();
        button1.ID = "Button1";
        button1.Text = "Submit";
        button1.Click += new EventHandler(Button_Click);

        Label label1 = new Label();
        label1.ID = "Label1";
        label1.Text = "A full page postback occurred.";

        var s1 = Builder<Product>.CreateListOfSize(15).Build();
        GridView gv1 = new GridView();
        gv1.DataSource = s1;
        createButton(gv1);
        gv1.RowCommand += new GridViewCommandEventHandler(CustomersGridView_RowCommand);

        this.myPanel.Controls.Add(button1);
        this.myPanel.Controls.Add(label1);
        this.myPanel.Controls.Add(gv1);
    }

    void createButton(GridView g)
    {
        ButtonField tea = new ButtonField();
        tea.ButtonType = ButtonType.Image;
        tea.ImageUrl = "~/checkdailyinventory.bmp";
        tea.CommandName = "buttonClicked";
        tea.HeaderText = "space";
        g.Columns.Add(tea);
    }

    protected void Button_Click(object sender, EventArgs e)
    {
        ((Label)Page.FindControl("Label1")).Text = "Panel refreshed at " +
            DateTime.Now.ToString();
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        this.DataBind();
    }

    public void CustomersGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "buttonClicked")
        {
            //int index = Convert.ToInt32(e.CommandArgument);

            this.lblMessage.Text = DateTime.Now.ToString();
        }
    }

输出

enter image description here

关于c# - 如何以编程方式将 Gridview 添加到 UpdatePanel，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11313482/

24 4 0
文章推荐： python - py2exe 64位python 2.7安装
文章推荐： c++ - Direct3D11 在调试程序运行时发出声音
文章推荐： c++ - 指定容器类型的迭代器类型的部分特化
文章推荐： c++ - 无法在动态链接库 libstdc++-6.dll 中找到过程入口点 __gxx_personality_v0
太空狗
个人简介

我是一名优秀的程序员,十分优秀！

滴滴打车优惠券免费领取
滴滴打车优惠券
全站热门文章
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com