WPF添加数据网格图像列可能

本文关键字:图像 网格 添加 数据 数据网 WPF | 更新日期: 2023-09-27 18:06:24

使用c#。. Net 4.5, Visual Studio 2012 Ulti, WPF.

我有一些旧的win-forms代码,我想在这个新的WPF应用程序。

代码如下:

DataGridViewImageCell pNew = new DataGridViewImageCell();
ParetoGrid.Columns.Add(new DataGridViewImageColumn() { CellTemplate = pNew, FillWeight = 1, HeaderText = "pNew", Name = "pNew", Width = 30 });
ParetoGrid.Columns["pNew"].DisplayIndex = 18;

3行代码添加一个可以处理图像的列。在WPF中,我看到它有点不同。我需要添加一个"图像列"吗?还是WPF列支持图像?还是有另一种只是语法不同的3行解决方案?

谢谢大家的帮助

WPF添加数据网格图像列可能

看答案:

WPF DataGrid中的图像列

 <DataGridTemplateColumn Header="Image" Width="SizeToCells"
 IsReadOnly="True">
   <DataGridTemplateColumn.CellTemplate>
      <DataTemplate>
           <Image Source="{Binding Image}" />
      </DataTemplate>
    </DataGridTemplateColumn.CellTemplate>
 </DataGridTemplateColumn>

在代码后面添加一列:

DataGridTextColumn textColumn1 = new DataGridTextColumn();
textColumn1.Header = "Your header";
textColumn1.Binding = new Binding("YourBindingField");
dg.Columns.Add(textColumn1);

使用DataGridTemplateColumn添加自定义列参见:如何以编程方式显示wpf数据网格列中的图像?

我是这样做的。在数据网格中添加一个带有图像控件的数据模板,如下所示

            <DataGridTemplateColumn Header="File Type" Width="*">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Image Height="25" Width="50" Source="{Binding FileIcon}"  />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>

正如你所看到的,我正在将图像与一个名为"FileIcon"的属性绑定,该属性在版本类中使用,如下所示

            public class Version
            {
              public string FileIcon { get; set; }
            }

现在你只需要做的是绑定提供一个路径到"FileIcon"和更新ItemSource的DataGrid,像这样

            ObservableCollection<Version> items = new ObservableCollection<Version>();
            items.Add(new Version()
            {
                FileIcon = "/AssemblyName;component/Images/eye.png",
            });
            YourDataGrid.ItemsSource = null;
            YourDataGrid.ItemsSource = items;

这是主窗口。Xaml的代码很简单,以便更好地理解

<Window x:Class="Pic_in_Datagrid.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Pic_in_Datagrid"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <DataGrid x:Name="dt1" ColumnWidth="*" AutoGenerateColumns="False">
        </DataGrid>
    </Grid>
</Window>

在它之后,这里是我的MainWindow.xaml.cs的代码图像或文本动态添加在datadrid…

using System;
using System.Collections.Generic;
using System.IO;
using System.Windows;
using System.Windows.Data;
using System.Windows.Media.Imaging;
using System.Windows.Controls;    
namespace Pic_in_Datagrid
        {
            /// <summary>
            /// Interaction logic for MainWindow.xaml
            /// </summary>
            public partial class MainWindow : Window
            {
                public StudentData stu_data { get; set; }
                public MainWindow()
                {
                    InitializeComponent();
                    stu_data = new StudentData();
                    List<StudentData> stu = new List<StudentData>();
                    stu.Add(new StudentData() { image = toBitmap(File.ReadAllBytes(@"D:'1.jpg")), stu_name = "abc" });
                    stu.Add(new StudentData() { image = toBitmap(File.ReadAllBytes(@"D:'1.jpg")), stu_name = "def" });

                    FrameworkElementFactory factory = new FrameworkElementFactory(typeof(System.Windows.Controls.Image));
                    Binding bind = new System.Windows.Data.Binding("image");//please keep "image" name as you have set in your class data member name
                    factory.SetValue(System.Windows.Controls.Image.SourceProperty, bind);
                    DataTemplate cellTemplate = new DataTemplate() { VisualTree = factory };
                    DataGridTemplateColumn imgCol = new DataGridTemplateColumn()
                    {
                        Header = "image", //this is upto you whatever you want to keep, this will be shown on column to represent the data for helping the user...
                        CellTemplate = cellTemplate
                    };
                    dt1.Columns.Add(imgCol);
                    dt1.Columns.Add(new DataGridTextColumn()
                    {
                        Header = "student name",
                        Binding = new Binding("stu_name") //please keep "stu_name" as you have set in class datamember name
                    });
                    dt1.ItemsSource = stu;    
                }
                public static BitmapImage toBitmap(Byte[] value)
                {
                    if (value != null && value is byte[])
                    {
                        byte[] ByteArray = value as byte[];
                        BitmapImage bmp = new BitmapImage();
                        bmp.BeginInit();
                        bmp.StreamSource = new MemoryStream(ByteArray);
                        bmp.EndInit();
                        return bmp;
                    }
                    return null;
                }
            }
           public class StudentData
           {
                    public BitmapImage image { get; set; }
                    public string stu_name { get; set; }
            }
        }

以上所有代码取自不同的资源…感谢他们开发和分享这些代码…

您可以尝试通过下面的模式添加图像到DataGridTextColumn。你可以整理和复制到剪贴板工作良好。使用您的转换器,或绑定到您的属性。

<DataGridTextColumn  Header="Level"  IsReadOnly="True" Binding="{Binding Level,Converter={StaticResource LogLevelStringConverter}}"   >
    <DataGridTextColumn.CellStyle>
        <Style TargetType="DataGridCell" >
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="DataGridCell">
                        <Grid Background="{TemplateBinding Background}" >
                            <ContentPresenter VerticalAlignment="Center" Margin="20,0,0,0" HorizontalAlignment="Left"  />
                            <Image Grid.Column="0" Width="18" Height="18" Source="{Binding Level,Converter={StaticResource LogLevelIconConverter}}"  HorizontalAlignment="Left" />
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </DataGridTextColumn.CellStyle>
</DataGridTextColumn>