以编程方式从另一个按钮执行单击 DataGridView 按钮单元格

Question

我对 .NET 中的 DataGridView 控件有疑问。

我从工具箱中插入了一个DataGridView，并将它与我在访问中设置的数据库连接起来。然后我从DataGridView 任务面板的编辑列中添加了一个带有按钮的列。

DataGridView 按钮的点击事件没有问题！

当我单击DataGridView 之外的另一个按钮时，我想以编程方式单击DataGridView 按钮。我该怎么做？

DataGridView的代码是：

Private Sub dgvAnimSel_CellContentClick(sender As Object, e As DataGridViewCellEventArgs) _
    Handles dgvAnimSel.CellContentClick
    Dim V As String = dgvAnimSel.Rows(e.RowIndex).Cells(0).Value
    If e.ColumnIndex = 3 Then
        If V = 1 Then
            If A1 = 1 Then
                'this is the uncheck state
                Me.dgvAnimSel.CurrentCell.Style.BackColor = Color.White
                Me.dgvAnimSel.CurrentCell.Style.ForeColor = Color.Black
                Me.dgvAnimSel.CurrentCell.Value = "Select"
                ItemTextNew = ItemTextOr + "1"
                ItemName = ListView1.FindItemWithText(ItemTextNew, False, 0, True)
                ListView1.Items.Remove(ItemName)
                A1 = 0
            Else
                'this is the check state
                Me.dgvAnimSel.CurrentCell.Style.BackColor = Color.Green
                Me.dgvAnimSel.CurrentCell.Style.ForeColor = Color.White
                Me.dgvAnimSel.CurrentCell.Value = "Selected"
                a = ListView1.Items.Add(" " + "Animation 1 ", 0)
                A1 = 1
            End If
        End If
End Sub

提前谢谢你！

Answer 1

您可以使用以下任一选项：

• 通过创建DataGridViewCellEventArgs 的实例并将其传递给事件处理方法，像普通方法一样调用CellContentClick 的事件处理程序。
• 或者将整个逻辑放在一个方法中，并在需要时从按钮的DataGridView 的CellContentClick 或Click 调用该方法。

VB.NET

示例 1 - 通过调用事件处理程序对 DataGrdiView Button Cell 执行 Click

要以编程方式单击特定行中的按钮，您可以调用您创建为CellContentClick 事件的事件处理程序的方法，使用合适的DataGridViewCellEventArgs 作为e 和您的DataGridView 作为sender：

Private Sub AnotherButton_Click(sender As Object, e As EventArgs) _
    Handles AnotherButton.Click
    ' zero based ColumnIndex of your button column= 3 (for example)
    ' zero based RowIndex that you want to click on its button column = 2 (for example)
    Dim arg = New DataGridViewCellEventArgs(3, 2) 
    DataGridView1_CellContentClick(DataGridView1, arg)
End Sub

Private Sub DataGridView1_CellContentClick(sender As Object, _
    e As DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
    MessageBox.Show(e.RowIndex.ToString())
End Sub

示例 2 - 将逻辑放在另一个方法中，并在需要时调用该方法

作为另一种选择，您可以将与单击单元格按钮相关的逻辑放入方法中，依赖于Cell 和Row 对象，并且只将合适的值传递给该方法。然后你可以在任何你需要的地方调用该方法。

Private Sub DoSomething(rowIndex as Integer, columnIndex as Integer)
    MessageBox.Show(rowIndex.ToString())
End Sub

Private Sub AnotherButton_Click(sender As Object, e As EventArgs) _
    Handles AnotherButton.Click
    ' zero based ColumnIndex of your button column= 3 (for example)
    ' zero based RowIndex that you want to click on its button column = 2 (for example)
    DoSomething(2, 3) 
End Sub

Private Sub DataGridView1_CellContentClick(sender As Object, _
    e As DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
    DoSomething(e.RowIndex, e.ColumnIndex)
End Sub

C#

示例 1 - 通过调用事件处理程序对 DataGrdiView Button Cell 执行 Click

要以编程方式单击特定行中的按钮，您可以调用您创建为CellContentClick 事件的事件处理程序的方法，使用合适的DataGridViewCellEventArgs 作为e 和您的DataGridView 作为sender：

private void anotherButton_Click(object sender, EventArgs e)
{
    ' zero based ColumnIndex of your button column= 3 (for example)
    ' zero based RowIndex that you want to click on its button column = 2 (for example)
    var arg = new DataGridViewCellEventArgs(3, 2); 
    aataGridView1_CellContentClick(dataGridView1, arg);
}

private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
    MessageBox.Show(e.RowIndex.ToString());
}

示例 2 - 将逻辑放在另一个方法中，并在需要时调用该方法

作为另一种选择，您可以将与单击单元格按钮相关的逻辑放入方法中，依赖于 Cell 和 Row 对象，并且只将合适的值传递给该方法。然后你可以在任何你需要的地方调用该方法。

private void DoSomething(int rowIndex, int columnIndex)
{
    MessageBox.Show(rowIndex.ToString());
}

private void anotherButton_Click(object sender, EventArgs e)
{
    ' zero based ColumnIndex of your button column= 3 (for example)
    ' zero based RowIndex that you want to click on its button column = 2 (for example)
    DoSomething(2, 3); 
}

private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
    DoSomething(e.RowIndex, e.ColumnIndex);
}

Answer 2

如果要以编程方式生成单击DataGridViewButtonCell 实例，可以使用DataGridViewCell.AccessibilityObject 属性并调用DoDefaultAction 方法。

类似这样的东西（对不起C#，我相信你可以把它翻译成VB）：

DataGridViewButtonCell otherCell = ...;
otherCell.AccessibilityObject.DoDefaultAction();

测试：

using System;
using System.Linq;
using System.Windows.Forms;

namespace Samples
{
    static class Program
    {
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            var form = new Form();
            var grid = new DataGridView { Dock = DockStyle.Fill, Parent = form, AutoGenerateColumns = false };
            var col0 = new DataGridViewTextBoxColumn { Name = "Col0", HeaderText = "Col0", DataPropertyName = "Col0" };
            var col1 = new DataGridViewButtonColumn { Name = "Col1", HeaderText = "Col1", DataPropertyName = "Col1" };
            grid.Columns.AddRange(new DataGridViewColumn[] { col0, col1 });
            grid.CellContentClick += (sender, e) =>
            {
                MessageBox.Show("Clicked Cell[" + e.RowIndex + "," + e.ColumnIndex + "]");
            };
            grid.DataSource = Enumerable.Range(0, 10).Select(n => new { Col0 = "Cell[" + n + ",0]", Col1 = "Cell[" + n + ",1]" }).ToList();
            var button = new Button { Dock = DockStyle.Bottom, Parent = form, Text = "Click" };
            button.Click += (sender, e) =>
            {
                var cell = grid.CurrentRow.Cells[col1.Index];
                cell.AccessibilityObject.DoDefaultAction();
            };
            Application.Run(form);
        }
    }
}