如何将数据绑定到列表框 [英] how to bind data to listbox

问题描述

我将数据绑定到wp7中的列表框

这是代码

i am binding data to listbox in wp7

here is the code

<ListBox x:Name="list_budget" Width="440">
                        <ListBox.ItemTemplate>
                            <DataTemplate>
                                <TextBlock Name="txtname" Text="{Binding category}"></TextBlock>

                            </DataTemplate>
                        </ListBox.ItemTemplate>
                    </ListBox>

//类函数

//class function

 public List<string> jinal;

        public void  budgetcategorywise()
        {

            var q = from shoppingItem p in db.Item1
                    group p by new { p.category_name } into g
                    select new { category = g.Key, total = g.Sum(p => p.total_amt) }.ToString();

          jinal = q.ToList();
    }


//coding

 list_budget.ItemsSource = App.Viewmod.jinal;

现在，错误是查询确定，结果正确，但是我无法将数据绑定到列表框.

now,the error is query is ok result is perfact but i am not able to bind the data to listbox.

推荐答案

嗨.
首先在ListBox中添加ItemSource属性的定义.请参见以下内容:

Hi.
First of all add in ListBox definition of ItemSource property.See below:

<ListBox x:Name="list_budget" ItemSource="{Binding}" Width="440">
                        <ListBox.ItemTemplate>
                            <DataTemplate>
                                <TextBlock Name="txtname" Text="{Binding category}"></TextBlock>

                            </DataTemplate>
                        </ListBox.ItemTemplate>
                    </ListBox>

还有为什么将变量jinal声明为:

And alos why you declared variable jinal as:

List<string></string>

????

我想，它必须是

????

I suppose, that it must be

List<resultset> jinal</resultset>

，其中ResulttSet可以表示如下:

, where ResulttSet could be represent as follow:

public class ResulSet
{
public string Name {get; set;}
public int Total {get; set;}
}

另外，使用ObservableCollection而不是List会更受欢迎！

Also, it would be more prefarable to use ObservableCollection instead of List!!

这篇关于如何将数据绑定到列表框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！