初始化网格时，同一 DataGridView 列中的控件不呈现 [英] Controls in the same DataGridView column dont render while initializing grid

问题描述

好                          坏

GOOD                                                  BAD

我在 DataGridView 列中托管不同的控件.当我同时添加控件时，我初始化网格，控件显示为文本框 (BAD).如果我在 DataGridView 初始化后添加控件，控件呈现正确(GOOD).

I'm hosting different controls in DataGridView column. When I add controls at the same time I initialize the grid the controls show as Textboxes (BAD). If I add the controls after the DataGridView has been initialized controls render correctly (GOOD).

public Form1()
{
        InitializeComponent();
        ControlsInGridViewColumn(); //<- renders controls as textboxes
}

private void button1_Click(object sender, EventArgs e)
{
        ControlsInGridViewColumn();  //<- does correctly render controls
}

private void ControlsInGridViewColumn()
{
    DataTable dt = new DataTable();
    dt.Columns.Add("name");
    for (int j = 0; j < 10; j++)
    {
        dt.Rows.Add("");
    }
    this.dataGridView1.DataSource = dt;
    this.dataGridView1.Columns[0].Width = 200;

    DataGridViewComboBoxCell ComboBoxCell = new DataGridViewComboBoxCell();
    ComboBoxCell.Items.AddRange(new string[] { "aaa","bbb","ccc" });
    this.dataGridView1[0, 0] = ComboBoxCell;
    this.dataGridView1[0, 0].Value = "bbb";

    DataGridViewTextBoxCell TextBoxCell = new DataGridViewTextBoxCell();
    this.dataGridView1[0, 1] = TextBoxCell;
    this.dataGridView1[0, 1].Value = "some text";

    DataGridViewCheckBoxCell CheckBoxCell = new DataGridViewCheckBoxCell();
    CheckBoxCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
    this.dataGridView1[0, 2] = CheckBoxCell;
    this.dataGridView1[0, 2].Value = true;
}

如何使控件在初始化期间正确呈现?

(我正在动态添加 DataGridViews).

更新: Jacob Seleznev 的回答适用于表单，但不适用于我需要的用户控件......这里是如何重现它:

UPDATE: Jacob Seleznev's answer works for Forms but not user controls which is what I need... Here is how to reproduce it:

在表格中:

private void button3_Click(object sender, EventArgs e)
{
    this.Controls.Add(new userCtrl());
}

用户控制:

public partial class userCtrl : UserControl
{
    public userCtrl()
    {
        InitializeComponent();
    }

    protected override void OnLoad(EventArgs e)
    {
        ControlsInGridViewColumn();
        base.OnLoad(e);
    }

    public void ControlsInGridViewColumn()
    {
        //same code as above
    }

}

推荐答案

这对我有用:

    protected override void OnLoad(EventArgs e)
    {
        ControlsInGridViewColumn();  //<- does correctly render controls
        base.OnLoad(e);
    }

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