我的DataGridView中有几列,并且我的行中有数据。我在这里看到了一些解决方案,但我无法将它们结合起来!
只需右键单击一行,它就会选择整行并显示一个菜单,其中包含一个删除行的选项,当选择该选项时,它将删除该行。
我做了几次尝试,但没有一个工作,看起来很乱。我该怎么办?
答案 0 :(得分:95)
我终于解决了它:
在Visual Studio中,使用名为“DeleteRow”的项目创建ContextMenuStrip
然后在DataGridView链接上使用ContextMenuStrip
使用下面的代码帮我搞定了。
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();
}
答案 1 :(得分:31)
对于这个问题的完整性,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为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.
}
}
答案 2 :(得分:8)
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;
}
TADA:D。最简单的方式。对于自定义单元格,只需修改一下。
答案 3 :(得分:3)
仅为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。对于cource,你必须如下所述初始化你的mousedown事件:
this.MyDataGridView.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown);
在你的构造函数中。
答案 4 :(得分:2)
此问题中提出的所有答案均基于鼠标点击事件。您还可以为ContenxtMenuStrip
分配DataGridview
,并检查DataGridView
上的用户 RightMouseButtons 时是否选择了行,并决定是否要查看ContenxtMenuStrip
与否CancelEventArgs.Cancel
。您可以通过在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;
}
值来实现此目的
{{1}}
但是如果你有几个上下文菜单条,每个菜单条包含不同的选项,根据选择,我也会自己选择鼠标点击方式。
答案 5 :(得分:2)
基于@ Data-Base答案,在make选择模式FullRow
之前它将无效 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();
}
答案 6 :(得分:1)
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();
}
答案 7 :(得分:1)
对我来说没有任何错误:
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();
}
}
答案 8 :(得分:0)
您还可以通过在事件代码中使用以下内容使其更简单:
private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
rowToDelete = e.RowIndex;
MyDataGridView.Rows.RemoveAt(rowToDelete);
MyDataGridView.ClearSelection();
}
}
答案 9 :(得分:0)
点击此处可以使用DataGridView
RowTemplate
属性完成。
注意:此代码未经过测试,但我之前使用过此方法。
// 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;
你去,就这么简单!
答案 10 :(得分:0)
我有一个新的解决方法来获得相同的结果,但代码更少。 对于Winforms ......这个例子是葡萄牙语 一步一步跟进
答案 11 :(得分:0)
private void dataGridView1_CellContextMenuStripNeeded(object sender,
DataGridViewCellContextMenuStripNeededEventArgs e)
{
if (e.RowIndex != -1)
{
dataGridView1.ClearSelection();
this.dataGridView1.Rows[e.RowIndex].Selected = true;
e.ContextMenuStrip = contextMenuStrip1;
}
}