将List <class>绑定到DataGridView </class>

Question

我需要你的帮助来解决如何将List绑定到DataGridView的问题。我尝试使用BindingList<T>但仍然没有在gridview中显示记录。我尝试使用List<T>，但它仍无效。

以下是我使用的代码：

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        ToolClientController ctrl = new ToolClientController();
        IpAddressTextbox.Text = ctrl.GetIPv4Config();
        PortNumberTextbox.Text = ctrl.GetPortNumber();
    }

    private void BrowseButton_Click(object sender, EventArgs e)
    {
        DialogResult result = openFileDialog1.ShowDialog();
        if (result == DialogResult.OK)
        {
            ToolMsgFileTextbox.Text = openFileDialog1.FileName;
        }
    }

    private void UploadButton_Click(object sender, EventArgs e)
    {
        if (string.IsNullOrWhiteSpace(ToolMsgFileTextbox.Text))
        {
            FileTypeError.SetError(UploadButton, "Please enter filename.");
            return;
        }

        if (!openFileDialog1.FileName.Contains(".txt"))
        {
            FileTypeError.SetError(UploadButton, "File should be in .txt");
            return;
        }

        ToolClientController ctrl = new ToolClientController();            

        List<ToolMessages> test = new List<ToolMessages>();
        ToolMessages tool = new ToolMessages();
        tool.IsPass = true;
        tool.ToolMessageReply = string.Empty;
        tool.ToolMessageRequest = "x";
        test.Add(tool);

        MessageGridViews.AutoGenerateColumns = false;

        DataGridViewTextBoxColumn col1 = new DataGridViewTextBoxColumn();
        col1.DataPropertyName = "ToolMessageRequest";
        col1.HeaderText = "Request";            
        MessageGridViews.Columns.Add(col1);

        BindingList<ToolMessages> bind = new BindingList<ToolMessages>(test);

        MessageGridViews.VirtualMode = true;
        MessageGridViews.DataSource = bind; 
    }
}

Answer 1

根据您的代码，我准备了简单的WinForms应用程序：

public Form1()
{
    InitializeComponent();
    List<ToolMessages> test = new List<ToolMessages>();
    ToolMessages tool = new ToolMessages();
    tool.IsPass = true;
    tool.ToolMessageReply = string.Empty;
    tool.ToolMessageRequest = "x";
    test.Add(tool);

    dataGridView1.AutoGenerateColumns = false;

    DataGridViewTextBoxColumn col1 = new DataGridViewTextBoxColumn();
    col1.DataPropertyName = "ToolMessageRequest";
    col1.HeaderText = "Request";
    dataGridView1.Columns.Add(col1);

    BindingList<ToolMessages> bind = new BindingList<ToolMessages>(test);

    dataGridView1.DataSource = bind;
    dataGridView1.Show();
}

我直接通过WinForms设计器将dataGridView1添加到表单中，因此InitializeComponent方法如下所示：

private void InitializeComponent()
{
    this.dataGridView1 = new System.Windows.Forms.DataGridView();
    ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
    this.SuspendLayout();
    // 
    // dataGridView1
    // 
    this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
    this.dataGridView1.Location = new System.Drawing.Point(560, 57);
    this.dataGridView1.Name = "dataGridView1";
    this.dataGridView1.Size = new System.Drawing.Size(240, 150);
    this.dataGridView1.TabIndex = 1;
    // 
    // Form1
    // 
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.ClientSize = new System.Drawing.Size(967, 399);
    this.Controls.Add(this.dataGridView1);
    this.Name = "Form1";
    this.Text = "Form1";
    ((System.ComponentModel.ISupportInitialize)(this.gridControl1)).EndInit();
    ((System.ComponentModel.ISupportInitialize)(this.gridView1)).EndInit();
    ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
    this.ResumeLayout(false);
}

一切似乎都运行得很好......数据绑定到网格和输出看起来像：

这正是我期望看到的，所以我不会发现您的解决方案存在任何实际问题，除非您发布更大的代码，我可以重现您遇到的问题。