我的 DataGridView 中的列很少，并且行中有数据。我在这里看到了几个解决方案，但我无法将它们结合起来！
Simply a way to right-click on a row, it will select the whole row and show a menu with an option to delete the row and when the option selected it will delete the row.
我做了一些尝试，但没有一个有效，而且看起来很乱。我该怎么办？
我终于解决了：
在 Visual Studio 中，使用名为“DeleteRow”的项目创建一个 ContextMenuStrip
然后在 DataGridView 链接 ContextMenuStrip
使用下面的代码帮助我让它工作。
this.MyDataGridView.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown);
this.DeleteRow.Click += new System.EventHandler(this.DeleteRow_Click);
这是很酷的部分
private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
if(e.Button == MouseButtons.Right)
{
var hti = MyDataGridView.HitTest(e.X, e.Y);
MyDataGridView.ClearSelection();
MyDataGridView.Rows[hti.RowIndex].Selected = true;
}
}
private void DeleteRow_Click(object sender, EventArgs e)
{
Int32 rowToDelete = MyDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
MyDataGridView.Rows.RemoveAt(rowToDelete);
MyDataGridView.ClearSelection();
}
为了这个问题的完整性，最好使用 Grid 事件而不是鼠标。
首先设置您的数据网格属性：
SelectionMode 到 FullRowSelect 和 RowTemplate / ContextMenuStrip 到上下文菜单。
创建 CellMouseDown 事件：-
private void myDatagridView_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
int rowSelected = e.RowIndex;
if (e.RowIndex != -1)
{
this.myDatagridView.ClearSelection();
this.myDatagridView.Rows[rowSelected].Selected = true;
}
// you now have the selected row with the context menu showing for the user to delete etc.
}
}
private void dgvOferty_CellContextMenuStripNeeded(object sender, DataGridViewCellContextMenuStripNeededEventArgs e)
{
dgvOferty.ClearSelection();
int rowSelected = e.RowIndex;
if (e.RowIndex != -1)
{
this.dgvOferty.Rows[rowSelected].Selected = true;
}
e.ContextMenuStrip = cmstrip;
}
多田：D。最简单的方式时期。对于自定义单元格，只需稍作修改。
只为 mousedown 添加事件要容易得多：
private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
var hti = MyDataGridView.HitTest(e.X, e.Y);
MyDataGridView.Rows[hti.RowIndex].Selected = true;
MyDataGridView.Rows.RemoveAt(rowToDelete);
MyDataGridView.ClearSelection();
}
}
这更容易。当然，您必须像已经提到的那样初始化 mousedown-event：
this.MyDataGridView.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown);
在你的构造函数中。
这个问题的所有答案都是基于鼠标点击事件。您还可以为您分配一个ContenxtMenuStrip并DataGridview检查当用户RightMouseButtons上是否有选择的行DataGridView并决定您是否要查看该行ContenxtMenuStrip。您可以通过CancelEventArgs.Cancel在ContextMenuStrip
private void MyContextMenuStrip_Opening(object sender, CancelEventArgs e)
{
//Only show ContextMenuStrip when there is 1 row selected.
if (MyDataGridView.SelectedRows.Count != 1) e.Cancel = true;
}
但是，如果您有多个上下文菜单条，每个都包含不同的选项，具体取决于选择，我自己也会选择鼠标单击方法。
基于@Data-Base 的回答，在选择模式 FullRow 之前它不会起作用
MyDataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
但是如果你需要让它在 CellSelect 模式下工作
MyDataGridView.SelectionMode = DataGridViewSelectionMode.CellSelect;
// for cell selection
private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
if(e.Button == MouseButtons.Right)
{
var hit = MyDataGridView.HitTest(e.X, e.Y);
MyDataGridView.ClearSelection();
// cell selection
MyDataGridView[hit.ColumnIndex,hit.RowIndex].Selected = true;
}
}
private void DeleteRow_Click(object sender, EventArgs e)
{
int rowToDelete = MyDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
MyDataGridView.Rows.RemoveAt(rowToDelete);
MyDataGridView.ClearSelection();
}
private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
if(e.Button == MouseButtons.Right)
{
MyDataGridView.ClearSelection();
MyDataGridView.Rows[e.RowIndex].Selected = true;
}
}
private void DeleteRow_Click(object sender, EventArgs e)
{
Int32 rowToDelete = MyrDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
MyDataGridView.Rows.RemoveAt(rowToDelete);
MyDataGridView.ClearSelection();
}
private void dataGridView1_CellContextMenuStripNeeded(object sender,
DataGridViewCellContextMenuStripNeededEventArgs e)
{
if (e.RowIndex != -1)
{
dataGridView1.ClearSelection();
this.dataGridView1.Rows[e.RowIndex].Selected = true;
e.ContextMenuStrip = contextMenuStrip1;
}
}
它对我有用，没有任何错误：
this.dataGridView2.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown);
this.dataGridView2.Click += new System.EventHandler(this.DeleteRow_Click);
还有这个
private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
var hti = dataGridView2.HitTest(e.X, e.Y);
dataGridView2.ClearSelection();
dataGridView2.Rows[hti.RowIndex].Selected = true;
}
}
private void DeleteRow_Click(object sender, EventArgs e)
{
Int32 rowToDelete = dataGridView2.Rows.GetFirstRow(DataGridViewElementStates.Selected);
if (rowToDelete == -1) { }
else
{
dataGridView2.Rows.RemoveAt(rowToDelete);
dataGridView2.ClearSelection();
}
}
您还可以通过在事件代码中使用以下内容来简化此操作：
private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
rowToDelete = e.RowIndex;
MyDataGridView.Rows.RemoveAt(rowToDelete);
MyDataGridView.ClearSelection();
}
}
请参阅此处，它可以使用该DataGridView RowTemplate属性来完成。
注意：此代码未经测试，但我以前使用过此方法。
// Create DataGridView
DataGridView gridView = new DataGridView();
gridView.AutoGenerateColumns = false;
gridView.Columns.Add("Col", "Col");
// Create ContextMenu and set event
ContextMenuStrip cMenu = new ContextMenuStrip();
ToolStripItem mItem = cMenu.Items.Add("Delete");
mItem.Click += (o, e) => { /* Do Something */ };
// This makes all rows added to the datagridview use the same context menu
DataGridViewRow defaultRow = new DataGridViewRow();
defaultRow.ContextMenuStrip = cMenu;
就这么简单！
我有一个新的解决方法可以得到相同的结果，但是代码更少。对于 Winforms ......这是葡萄牙语的例子 一步一步跟进
，现在......你已经模拟了来自用户的按键del
你不要忘记在gridview上启用删除，对吧？！
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