Question

我有一个带有播放图片ImageColumn的数据网格视图，如果用户点击播放图标，则 CellClick 事件设置“停止”图片来自资源。< / p>

Private Sub dg1_CellClick(sender As Object, e As DataGridViewCellEventArgs) Handles dg1.CellClick
    dg1.Rows(e.RowIndex).Cells(3).Value = New Bitmap(app1.My.Resources.stop)
End Sub

但我需要让用户点击什么图像（播放或停止）如何获取Cellclick事件的datagridview图像名称？我试过了

dg1.Rows(e.RowIndex).Cells(3).Value.ToString()

但返回“ System.Drawing.Image ”值我需要图像值。抱歉我的英语不好。

感谢您的兴趣

Answer 1

这就是我得到图像的方式。首先检查您单击的单元格是否为DataGridViewImageCell类型。如果是，请尝试将Value属性转换为您期望的任何图像格式。

    {
        dataGridView1.Columns.Add(new DataGridViewImageColumn());

        BitMap bitMap = new BitMap(5,5); // or however you get it from resources
        bitMap.Tag = "Play"; // Put the name of the image here

        dataGridView1.Rows.Add(bitMap); 
    }

    void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
    {
        var dgv = sender as DataGridView;
        if (dgv == null)
            return;

        var imageCell = dgv[e.ColumnIndex, e.RowIndex] as DataGridViewImageCell;
        if (imageCell == null)
            return;

        var image = imageCell.Value as Bitmap;
        if (image == null)
            return;

        string name = image.Tag as String;           
    }

或者，您可以将位图保存为类级别变量：

    Bitmap playBitmap = New Bitmap(app1.My.Resources.play);
    Bitmap stopBitmap = New Bitmap(app1.My.Resources.stop);

然后在CellClick方法中：

    void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
    {
        var dgv = sender as DataGridView;
        if (dgv == null)
            return;

        var imageCell = dgv[e.ColumnIndex, e.RowIndex] as DataGridViewImageCell;
        if (imageCell == null)
            return;

        if(imageCell.Value == playBitmap) 
        {

        }
        else if (imageCell.Value == stopBitmap)
        {

        }

    }

如何获取Datagridview Image Cell的图像值

1 个答案: