C# 加载内容页面时，我可以更改母版页中的标签文本吗？
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Can I change the text of a label in a masterpage when loading a content page?
提问by Cunners
I have a label in a master page (sample.master) called lblHeading.
我在母版页 (sample.master) 中有一个标签，称为 lblHeading。
I want to dynamically change the text of the label when I load the content page.
我想在加载内容页面时动态更改标签的文本。
I need to do this because I want to change the heading to something meaningful but only after I know about the content of the page.
我需要这样做，因为我想将标题更改为有意义的内容，但前提是我知道页面的内容。
Is this possible?
这可能吗？
采纳答案by Cunners
Yes.
是的。
You want to create a strongly-type master pageand you can then access it's properties from your content page during Page_Load or wherever else.
您想要创建一个强类型母版页，然后您可以在 Page_Load 或其他任何地方从您的内容页访问它的属性。
回答by CD..
You can create a public property in the masterpage that will change the label.
您可以在母版页中创建一个公共属性来更改标签。
public string Heading
{
set
{
lblHeading.text = value;
}
}
回答by Adrian Godong
Yes, it is possible. MasterPagebehaves just like UserControlin your page.
对的，这是可能的。MasterPage行为就像UserControl在您的页面中一样。
Possible steps to implement this:
实现这一点的可能步骤：
Create a property or method on the MasterPage that enables you to make changes to the Label. E.g.:
public void ChangeLabel(string label) { lblHeading.Text = label; }From your
Page, get the reference to theMasterPageby using thePage.Masterproperty.- Call the method defined in step 1 to change the
MasterPagecontents.
在 MasterPage 上创建一个属性或方法，使您能够对标签进行更改。例如：
public void ChangeLabel(string label) { lblHeading.Text = label; }从您的 中
Page，MasterPage使用Page.Master属性获取对 的引用。- 调用步骤 1 中定义的方法来更改
MasterPage内容。
Additional info: You may need to cast Page.Masterinto your MasterPagetype, try Coding the Wheel's linkfor instructions on how to do that.
附加信息：您可能需要转换Page.Master成您的MasterPage类型，请尝试编码轮子的链接以获取有关如何执行此操作的说明。
回答by Muhammad Akhtar
yes, you can in this very simple way........
是的，您可以通过这种非常简单的方式......
((Label)Master.FindControl("lblHeading")).Text = "your new text";
回答by Gary Huckabone
Do as stated above. Then, e.g., from your page do this (master page has label with ID="Label_welcome"):
按照上面说的做。然后，例如，从您的页面执行此操作（母版页的标签为 ID="Label_welcome"）：
Label mpLabel = (Label)Page.Master.FindControl("Label_welcome");
if (mpLabel != null)
{
mpLabel.Text = "Welcome Fazio!";
}
回答by Fandango68
It also depends on how deep your controls inside the Master page are. In my case, I had a Label control inside a ContentPlaceHolder control... so I had to do this...
它还取决于您在母版页中的控件的深度。就我而言，我在 ContentPlaceHolder 控件中有一个 Label 控件......所以我必须这样做......
Label myLBL = this.Master.FindControl("HeaderContent").FindControl("myLabel") as Label;
