Question

你可以帮助我，告诉我为什么我的代码不正确。我想创建一个UserControl，它将是一个注册表单。在这个控件中，我有一个按钮，当单击按钮时，我希望服务器重定向到另一个页面。这是我的代码：

control.ascx.cs：

public partial class ControlFormulaire : System.Web.UI.UserControl
{
    public event EventHandler ButtonClicked;// it could be named differently obviously
    protected void ValidateButton_Click(object sender, EventArgs e)
    {
               if (this.ButtonClicked != null)
                    ButtonClicked(this, new EventArgs());
    }

    protected void Page_Load(object sender, EventArgs e)
    {
    }
}

form.aspx.cs

protected void Page_Load(object sender, EventArgs e)
{
    this.SubscribForm.ButtonClicked += new EventHandler(SubscribForm_ButtonClicked); 
}

void SubscribForm_ButtonClicked(object sender, EventArgs e)
{
    Response.Redirect("WebForm2.aspx");
}

那是我的form.aspx：

<%@ Register TagPrefix="uc" TagName="Form" Src="~/ControlFormulaire.ascx"%>
<uc:Form ID="SubscribForm" runat="Server" MinVal="1" MaxVal="10" />

Answer 1

请试试这个

public partial class ControlFormulaire : System.Web.UI.UserControl
{
    public event EventHandler ButtonClicked;// it could be named differently obviously
    protected void ValidateButton_Click(object sender, EventArgs e)
    {
           ButtonClicked();
    }

    private void ButtonClicked()
    {
       if (ButtonClicked!= null)
       {
           ButtonClicked(this, EventArgs.Empty);
       }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
    }
}

protected void Page_Load(object sender, EventArgs e)
{
    ControlFormulaire.ButtonClicked+= new EventHandler(SubscribForm_ButtonClicked);
}

void SubscribForm_ButtonClicked(object sender, EventArgs e)
{
    Response.Redirect("WebForm2.aspx");
}

Answer 2

this line is the key or the custom click event ignores updatepanel 
// ScriptManager.GetCurrent(Page).RegisterAsyncPostBackControl(this);

and note the IPostBackEventHandler part in page definition


in this example ordinary button and a custom click event div work together inside an update panel
 

public partial class tmp2 : System.Web.UI.Page, IPostBackEventHandler
{

protected void Page_Load(object sender, EventArgs e)
{
    ScriptManager.GetCurrent(Page).RegisterAsyncPostBackControl(this);
    if (!Page.IsPostBack)
    {
        div1.Attributes["onclick"] = ClientScript.GetPostBackEventReference(this, "ClickDiv");
    }
}
protected void Button1_Click(object sender, EventArgs e)
{
    Label1.Text += "1";
    UpdatePanel1.Update();
}
protected void Div1_Click()
{

    div1.InnerHtml += "b";
    UpdatePanel1.Update();

}



public void RaisePostBackEvent(string eventArgument)
{

    if (!string.IsNullOrEmpty(eventArgument))
    {

        if (eventArgument == "ClickDiv")
        {

            Div1_Click();

        }

    }

}

}

从用户控件单击按钮单击我的表单（asp.Net）

2 个答案: