将动态文本分配给mvvm模式中wpf中的标签 [英] Assign dynamic text to a label in wpf in mvvm pattern

问题描述

我正在开发wpf（mvvm）应用程序，我在一个表单（视图）中有一个标签，我想动态分配一个文本来自viewmodel的标签。



任何帮助？

解决方案

在加载事件内你需要写code ..你只是告诉我你尝试了什么....

为此，你必须在你的 ViewModel 和实现 INotifyPropertyChanged 。最后将该属性绑定到标签控件的内容属性。



例如：



1）在ViewModel内添加属性：

 私人列表< string> inputString =  new  List< string>（）; 
  public 列表< string> InputString 
 {
  get  
 {
  return  inputString ; 
} 
  set  
 {
 inputString =  value  ; 
 RaisePropertyChanged（  InputString）; 
} 
} 

2）将此属性绑定到LableControl：

< pre lang =xml> < 标签 内容 = {Binding Path = InputString} / >




textbox.Text + = inp.ToString（）;







StringBuilder sb = new StringBuilder;

string sep =;

for（int i = 0; i< = ymax ; i ++）

{

inp.Add（i）;

sb.AppendFormat（{0} {1}，sep， inp）;

sep =，;

cmbb.ItemsSource = inp;

cmbb.SelectedIndex = 0;

}

textbox.Text = sb.ToString（）;

Hi,

I am working on wpf(mvvm) application where i have a label in one form(view) and i want to assign a text dynamically to the label from viewmodel.

Any help?

解决方案

Inside the load event u need to write the code..You just tell me what you have tried....

For this, You have to add one public property inside the your ViewModel and Implement INotifyPropertyChanged. And Lastly Bind that property to your Label control's Content property.

For example :

1) Inside the ViewModel add property:

private List<string> inputString = new List<string>();
public List<string> InputString
   {
            get
            {
                return inputString;
            }
            set
            {
                inputString= value;
                RaisePropertyChanged("InputString");
            }
    }

2) Bind this property to LableControl :

<Label Content="{Binding Path=InputString}" />

textbox.Text += inp.ToString();



StringBuilder sb = new StringBuilder;
string sep = "";
for (int i = 0; i <= ymax; i++)
{
inp.Add(i);
sb.AppendFormat("{0}{1}", sep, inp);
sep = ",";
cmbb.ItemsSource = inp;
cmbb.SelectedIndex = 0;
}
textbox.Text = sb.ToString();

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