以编程方式从另一个按钮单击DataGridView按钮单元格

我有一个关于.NET.中DataGridView控件的问题

我从工具箱中插入了一个DataGridView，并将其与我在access中设置的数据库连接。然后，我添加了一个列，其中包含DataGridView任务面板的编辑列中的按钮。

DataGridView按钮的点击事件可以正常工作！

当我点击DataGridView之外的另一个按钮时，我想以编程方式点击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！

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程序方法，像普通方法一样调用CellContentClick的事件处理程序
或者将整个逻辑放入一个方法中，并在需要时从DataGridView的CellContentClick或按钮的Click调用该方法

VB.NET

示例1-通过调用事件处理程序来点击DataGridView按钮单元格

要以编程方式单击特定行中的按钮，您可以调用您创建的作为CellContentClick事件的事件处理程序的方法，将合适的DataGridViewCellEventArgs用作e，将您的DataGridView用作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-将逻辑放入另一个方法中，并在需要时调用该方法

作为另一个选项，您可以将与单击单元格按钮相关的逻辑放在方法中，该逻辑依赖于Cell和Row对象，并且只向该方法传递合适的值。然后，您可以在任何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来点击DataGridView按钮单元格

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); 
    dataGridView1_CellContentClick(dataGridView1, arg);
}
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
    MessageBox.Show(e.RowIndex.ToString());
}

示例2-将逻辑放入另一个方法中，并在需要时调用该方法

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);
}

如果您想以编程方式生成点击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);
        }
    }
}

您遇到了麻烦，因为与公开方法的Button控件不同：

public void PerformClick();

DatagridView族不公开此方法。@微软：我不为你感到骄傲！

但是DataGridView类公开CurrentCell属性：

public DataGridViewCell CurrentCell { get; set; }

并且此属性触发事件CurrentCellChanged:

    public event EventHandler CurrentCellChanged;

因此，我的建议是，与其将处理程序放在Click上，不如将其放在CurrentCellChanged上，并通过设置当前单元格来执行触发，而不是寻找框架内不存在的Click（）方法，如下图所示：

DataGridViewCell currentCell = ...;
grid.CurrentCell = currentCell;

如果你使用这个解决方案，我很乐意通过你用左边的按钮投票来知道。

Youtube频道：https://youtube.com/channel/UCVww4lxZnKGx_5I4clpb52w

VB.NET

C#

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