如何在一个ASP:LoginView的文本框中添加一个值?

I have some DropDownLists and some TextBoxes on a page. Normally I use this to clear and add value to the items:

我有一些下拉列表和一些文本框在页面上。通常我用它来清除和增加项目的价值:

Clear control:

明确的控制:

txtEventNote.Text = String.Empty
ddlHours.SelectedIndex = 0

Add value:

添加值:

ddlHours.SelectedValue = dtEvents.Rows(0)("EventDate")
txtEventTitle.Text = dtEvents.Rows(0)("EventHome").ToString()

But if I do this for items thats inside an ASP:LoginView I get an error because the ID's cant be found.

但是，如果我对ASP:LoginView中的项这样做，我就会得到一个错误，因为找不到ID。

So my question is:

我的问题是:

How do I clear the ddlSize DropDownList ID and how do i add String.Empty to txtEventName.Text that's inside the LoginView which has an ID of "loginview2"?

如何清除ddlSize下拉列表ID以及如何添加字符串。空txtEventName。在LoginView中具有“loginview2”ID的文本?
And how do I add a value to a TextBox and DropDownList inside an LoginView called "loginview2" where I have a TextBox with the ID textEventName.Text and the DropDownList have ID ddlSize.

我如何在一个名为“loginview2”的LoginView中添加一个值到一个文本框和下拉列表，其中我有一个文本框，其中有一个ID textEventName。文本和下拉列表具有ID ddlSize。

If I delete the LoginView it's easy for me to do, but when I add the LoginView the ID's can't be found.

如果我删除LoginView，这对我来说很容易，但是当我添加LoginView时，就找不到ID。

1 个解决方案

#1

The LoginView control is a container control. It can hold other ASP.NET WebForm controls. To get a reference to the controls contained within the LoginView control use the FindContol method of the LoginView control.

LoginView控件是一个容器控件。它可以容纳其他ASP。净WebForm控制。要获取对LoginView控件中包含的控件的引用，请使用LoginView控件的FindContol方法。

TextBox tb = lcLoginView.FindControl("txtEventNote") as TextBox
if (tb != null)
{
     tb.Text = "My New Value For This TextBox control";
}

Do the same for your DropDownList.

对下拉列表也一样。

I found In Search Of ASP.Net Controls to be helpful for more about finding ASP.NET controls in other ASP.NET controls.

我在寻找ASP。Net控件有助于更多地找到ASP。NET控件在其他ASP中。网络控制。

#1