WPF数据网格未显示数据

本文关键字：数据 显示 数据网 WPF 网格 | 更新日期: 2023-09-27 18:00:12

我有一个数据网格：

<DataGrid Name="messageGrid">           
        <DataGridTextColumn Header="Revision" Binding="{Binding Message.Revision}"></DataGridTextColumn>
        <DataGridTextColumn Header="Opcode" Binding="{Binding Message.Opcode}"></DataGridTextColumn>
        <DataGridTextColumn Header="Reason" Binding="{Binding Message.Reason}"></DataGridTextColumn>
        <DataGridTextColumn Header="Reaction" Binding="{Binding Message.Reaction}"></DataGridTextColumn>
        <DataGridTextColumn Header="Projects" Binding="{Binding Message.Projects}"></DataGridTextColumn>
        <DataGridTextColumn Header="Links" Binding="{Binding Message.Links}"></DataGridTextColumn>
        <DataGridTextColumn Header="Notes" Binding="{Binding Message.Notes}"></DataGridTextColumn>       
    </DataGrid>

在预览中，我看不到我想看到的列（Revision、Opcode等），当我运行程序时，我里面没有任何列或数据，为什么会发生这种情况？

p.s我在消息里有数据。修改等等。我检查了

编辑：

我有Message属性的视图模型，我将其用作项目来源：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections.ObjectModel;
using System.Windows.Input;
using YogevAfekaRAPAT.YNIDS.Helpers;
using System.Diagnostics;
using System.Data;
namespace YogevAfekaRAPAT.YNIDS.ViewModels
{
public class MessageDetailsViewModel : NotificationObject
{
    #region Private Data Members

    private Model.Message message;

    private ObservableCollection<Model.MType> types;
    //private FileManager.fileManager fileManager;
    private Logger.Logger logger;
    #endregion

    #region Properties
    #region Types
    private ObservableCollection<Model.MType> _types;
    public ObservableCollection<Model.MType> Types
    {
        get { return _types; }
        set
        {
            if (_types != value)
            {
                _types = value;
            }
        }
    }
    #endregion
    #region Message
    public Model.Message Message
    {
        get
        {
            return message;
        }
        set
        {
            if (message == value)
            {
                return;
            }
            message = value;
            RaisePropertyChanged(() => Message);
        }
    }
    #endregion

    #endregion

    #region Ctor
    public MessageDetailsViewModel(Model.Network network, String messageName)
    {
        fileManager = FileManager.fileManager.getFileManager();
        //Message = network
        Message = network.getMessageFromName(messageName);
        Debug.WriteLine("Inside: public MessageDetailsViewModel(Model.Network network, String messageName) messageName = " + messageName + " Message.Desc = " + Message.Opcode);
    }
    #endregion
}

}

WPF数据网格未显示数据

您必须在<DataGrid.Columns>标记下添加Columns。

<DataGrid>
  <DataGrid.Columns>
     .... // Add columns here.
  </DataGrid.Columns>
</DataGrid>

您忘记将列定义包含在<DataGrid.Columns>:中

<DataGrid Name="messageGrid">
    <DataGrid.Columns>
        <DataGridTextColumn Header="Revision" Binding="{Binding Message.Revision}" />
        <DataGridTextColumn Header="Opcode" Binding="{Binding Message.Opcode}" />
        <DataGridTextColumn Header="Reason" Binding="{Binding Message.Reason}" />
        <DataGridTextColumn Header="Reaction" Binding="{Binding Message.Reaction}" />
        <DataGridTextColumn Header="Projects" Binding="{Binding Message.Projects}" />
        <DataGridTextColumn Header="Links" Binding="{Binding Message.Links}" />
        <DataGridTextColumn Header="Notes" Binding="{Binding Message.Notes}" />
    </DataGrid.Columns>
</DataGrid>

您需要绑定到集合。尝试定义一个只返回Message的ObservableCollection。

public ObservableCollection<Model.Message> Messages
{
    get { return new ObservableCollection<Model.Message> { Message }; }
}
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