编辑:
8年后,不要使用这种方法!
花时间学习 WPF 和数据绑定。
想知道这个问题是从哪里来的吗?单击编辑按钮。
If your Buttons Named like Button1,Button2,Button3....
you could use FindChild<T>()
here you get the method
for(int i =0; i< SPItems.Count;i++) // iterates for each item in your SPItems
{
Button foundButton = UIHelper.FindChild<Button>(Application.Current.MainWindow, "Button"+i);
if(foundButton != null) //Protecteted agains trying to use Null-Reference
{
var foundButtonTextBlock =foundButton .Content as TextBlock
if(foundButtonTextBlock != null)//Protecteted agains trying to add Text by Null-Reference
foundButtonTextBlock.Text = SPItems[i];
}
}
as normal way:
for(int i =0; i< SPItems.Count;i++) // iterates for each item in your SPItems
{
TextBlock foundTextBlock = UIHelper.FindChild<TextBlock>(this, "SubItem"+1+i+"txt");
if(foundTextBlock != null) //Protecteted agains trying to add Text by Null-Reference
{
foundTextBlock .Text = SPItems[i];
}
}
as Painful way:
int i =0;
if(SPItems.Count >0)
{
SubItem1txt.Text = SPItems[i];
i++;
}
if(SPItems.Count >1)
{
SubItem2txt.Text = SPItems[i];
i++;
}
if(SPItems.Count >2)
{
SubItem3txt.Text = SPItems[i];
i++;
}
if(SPItems.Count >3)
{
SubItem4txt.Text = SPItems[i];
i++;
}
if(SPItems.Count >4)
{
SubItem5txt.Text = SPItems[i];
i++;
}
if(SPItems.Count >0)
{
SubItem6txt.Text = SPItems[i];
i++;
}
if(SPItems.Count >5)
{
SubItem7txt.Text = SPItems[i];
i++;
}
if(SPItems.Count >6)
{
SubItem8txt.Text = SPItems[i];
i++;
}
//..... never ever do this
不要在代码中为这些简单任务操作 UI 元素。这是执行您所要求的 WPF 方式:
<Window x:Class="WpfApplication4.Window18"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window18" Height="300" Width="300">
<ItemsControl ItemsSource="{Binding}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Button Content="{Binding}" Margin="2"/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Window>
代码背后:
using System.Windows;
using System.Linq;
namespace WpfApplication4
{
public partial class Window18 : Window
{
public Window18()
{
InitializeComponent();
DataContext = Enumerable.Range(0, 20).Select(x => "Item" + x);
}
}
}
这是它在我的屏幕上的样子:
感谢WiiMaxx ,我找到了解决方案!
通过使用这种方法,我成功地使用从我的数据库中检索到的数据设置了我的按钮文本。
它变成了一个foreach
循环,但现在它完全按照需要工作。编辑:找到for
版本
我有一个WrapPanel
,其中包含 my buttons
,其中又包含 my TextBlock's
。
因为我TextBlock's
不是从(例如:)开始,0
所以我需要创建一个额外的. 我希望这对某人有用。1
SubItem1txt
int
谢谢大家 :) !
int i = 1;
int a = 0;
foreach (string spi in SPItems)
{
WrapPanel pnl = UIHelper.FindChild<WrapPanel>(this, "SubItems");
Button btn = UIHelper.FindChild<Button>(pnl, "SubItem" + i);
TextBlock tb = UIHelper.FindChild<TextBlock>(btn, "SubItem" + i + "txt");
btn.Visibility = Visibility.Visible;
tb.Text = SPItems[a];
a++;
i++;
}
int i = 1;
for (int a = 0; a < SPItems.Count; a++)
{
WrapPanel pnl = UIHelper.FindChild<WrapPanel>(this, "SubItems");
Button btn = UIHelper.FindChild<Button>(pnl, "SubItem" + i);
TextBlock tb = UIHelper.FindChild<TextBlock>(btn, "SubItem" + i + "txt");
btn.Visibility = Visibility.Visible;
tb.Text = SPItems[a];
i++;
}
这是一种肮脏的解决方案,但如果您要操作表单上的所有按钮,那么它是值得的。我所知道的最简单的方法是将所有按钮添加到一个ArrayList
(是的,手动,这是痛苦的部分),然后循环遍历该列表。