试图在数据网格中显示数据列表

Question

我正在尝试在 WPF 数据网格中显示数据列表，因为文本块只是将数据放在一起而没有任何类型的格式设置（我希望此数据的格式设置已为我完成）。

这是背后的代码

public void OnMessageReceived(object sender, MessageReceivedEventArgs e)
{
    try
    {
        if (e == null)
            return;

        if (e.CmsData != null)
        {
            List<string> mylist = new List<string>();
            foreach (var item in e.CmsData.Agents)
            {
                mylist.Add(item.AgName);
                mylist.Add(item.AuxReasonDescription);
            }
            Dispatcher.BeginInvoke(DispatcherPriority.Normal, (Action)(() =>
            {
                this.datagrid.ItemsSource = mylist;
            }));
        }
    }
}

我用来填充数据网格的XAML

<Grid Height="100" Width="178.201">
    <DataGrid AutoGenerateColumns="True" ItemsSource="{Binding Path=mylist, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"   x:Name="datagrid" Background="{x:Null}" Loaded="textBlock_Loaded"/>
</Grid>

这是 agents.cs 文件，其中包含我正在尝试拉入我的数据网格的变量，以备不时之需。

public class Agent : IEquatable<Agent>
{
    public int Extension { get; set; }
    public int WorkModeDirection { get; set; }
    public string WorkModeDirectionDescription { get; set; }
    public TimeSpan AgTime { get; set; }
    public int AuxReason { get; set; }
    public string AuxReasonDescription { get; set; }
    public int DaInQueue { get; set; }
    public int WorkSkill { get; set; }
    public int OnHold { get; set; }
    public int Acd { get; set; }
    public String LoginId { get; set; }
    public string AgName { get; set; }
    public int EId { get; set; }
    public int Preference { get; set; }
    public DateTime DateTimeCreated { get; set; }
    public DateTime DateTimeUpdated { get; set; }
    public int CmId { get; set; }
    #region Implementation of IEquatable<Agent>

    public bool Equals(Agent other)
    {
        if (ReferenceEquals(null, other))
            return false;

        if (ReferenceEquals(this, other))
            return true;

        return (other.LoginId == LoginId & other.CmId == CmId);
    }

    #endregion

    public override bool Equals(object obj)
    {
        if (ReferenceEquals(null, obj))
            return false;

        if (ReferenceEquals(this, obj))
            return true;

        if (obj.GetType() != typeof(Agent))
            return false;

        return Equals((Agent)obj);
    }

    //public override int GetHashCode()
    //{
    //    return LoginId;
    //}
    public override int GetHashCode()
    {
        string combinedNumber = "" + CmId + LoginId;
        int hash = Convert.ToInt32(combinedNumber);
        return hash;
    }

    public static bool operator ==(Agent left, Agent right)
    {
        return Equals(left, right);
    }

    public static bool operator !=(Agent left, Agent right)
    {
        return !Equals(left, right);
    }

    public override string ToString()
    {
        return " Ag: [Ext:" + Extension + " login:" + LoginId + " AgName:" + AgName + " CmId:" + CmId + "]";
    }
    public bool IsValid()
    {
        return LoginId != null;
    }
}

这是当前显示的内容...其中不包含任何我要打印出来的信息，我也不知道这些数字是从哪里来的。

Answer 1

您正在尝试将 DataGrid 绑定到一个完全没有意义的字符串列表。绑定到 DataGrid 的列表中的每个项目都应该代表网格中的一行。

由于您试图在每行中显示单个代理数据，因此您应该直接绑定到代理列表。

试试这个；

public void OnMessageReceived(object sender, MessageReceivedEventArgs e)
        {
            try
            {
                if (e == null)
                    return;

                if (e.CmsData != null)
                {
                    Dispatcher.BeginInvoke(DispatcherPriority.Normal, (Action)(() =>
                    {                        
                        this.datagrid.ItemsSource = e.CmsData.Agents;
                    }));                    
                    }
            }

但请记住，这将为代理对象的每个 public 属性生成列。要指定要显示的列，请检查另一个 SO 问题的答案：

Answer 2

您应该将 DataGrid 的 ItemsSource 设置为 List<Agent>:

public void OnMessageReceived(object sender, MessageReceivedEventArgs e)
{
    try
    {
        if (e == null)
            return;

        if (e.CmsData != null)
        {
            Dispatcher.BeginInvoke(DispatcherPriority.Normal, (Action)(() =>
            {
                this.datagrid.ItemsSource = e.CmsData.Agents.ToList();
            }));
        }
    }
}

...并为要在 XAML 的 DataGrid 中显示的 Agent class 的每个属性定义一列标记：

<DataGrid AutoGenerateColumns="False" 
                      x:Name="datagrid" Background="{x:Null}">
    <DataGrid.Columns>
        <DataGridTextColumn Header="AgName" Binding="{Binding AgName}" />
        <DataGridTextColumn Header="AuxReasonDescription" Binding="{Binding AuxReasonDescription}" />
    </DataGrid.Columns>
</DataGrid>

试图在数据网格中显示数据列表

trying to display a list of data in a datagrid

c#

data-binding

wpf

wpfdatagrid