[英]How to create a custom control with INamingContainer?
I am trying the following: 我正在尝试以下方法:
[PersistenceMode(PersistenceMode.InnerProperty)]
[TemplateContainer(typeof(TemplateContainer))]
public virtual ITemplate LayoutTemplate { get; set; }
protected void Page_Init(object sender, EventArgs e)
{
this.Controls.Clear();
if (LayoutTemplate != null)
{
var data = Enumerable.Range(0, 10);
foreach (int index in data)
{
TemplateContainer container = new TemplateContainer(index);
LayoutTemplate.InstantiateIn(container);
this.Controls.Add(container);
}
}
}
My container class: 我的容器类:
public class TemplateContainer : Control, INamingContainer
{
public int Index { get; set; }
internal TemplateContainer(int index)
{
this.Index = index;
}
}
And my markup: 和我的标记:
<uc:TemplateControl ID="ucTemplateControl" runat="server">
<LayoutTemplate>
<b>Index:</b>
<asp:TextBox ID="Literal1" runat="server"
Text='<%# Container.Index %>'
ReadOnly="true" />
<br />
</LayoutTemplate>
</uc:TemplateControl>
But for some reason Container.Index
is not rendering any value, just empty. 但是由于某种原因,
Container.Index
没有呈现任何值,只是空的。 10 controls are being created, but none shows a value. 正在创建10个控件,但没有一个显示值。
What did I do wrong? 我做错了什么? How can I fix it so it will show the
Index
value? 我该如何解决它才能显示
Index
值?
I tried something similar to MSDN example: 我尝试了类似于MSDN示例的内容:
To bind the value you need to call the DataBind
method of the custom control. 要绑定值,您需要调用自定义控件的
DataBind
方法。
Calling 呼唤
ucTemplateControl.DataBind();
from the page made the data to be bound on the template. 从页面上将数据绑定到模板上。
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