C# DataGridView 开头没有选中的行
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DataGridView without selected row at the beginning
提问by Peter
In my WinForms I have DataGridView. I wanted to select full row at once so I set SelectionModeas FullRowSelect. And now I have problem, because at the beginning my form underlines first row (set of selected rows is empty, the first row is not selected but just underlined). I have tried many things, such as:
在我的 WinForms 中，我有DataGridView. 我想一次选择整行，所以我设置SelectionMode为FullRowSelect. 现在我有问题，因为一开始我的表单在第一行下划线（选定的行集是空的，第一行没有被选中，只是有下划线）。我尝试了很多东西，例如：
private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
dataGridView1.ClearSelection();
}
And all failed, because in fact there is no selection.
而且都失败了，因为实际上没有选择。
How can I get rid of this underline?
我怎样才能摆脱这个下划线？
Thanks for any help!
谢谢你的帮助！
采纳答案by Peter
Unfortunately none of these answers helped me, but I found other solution. Instead of unable selection I will just hide it with this piece of code:
不幸的是，这些答案都没有帮助我，但我找到了其他解决方案。而不是无法选择，我将用这段代码隐藏它：
dataGridView1.DefaultCellStyle.SelectionBackColor = dataGridView1.DefaultCellStyle.BackColor;
dataGridView1.DefaultCellStyle.SelectionForeColor = dataGridView1.DefaultCellStyle.ForeColor;
So if anyone just wants to hide the selection it's gonna work pretty well.
所以如果有人只是想隐藏选择，它会工作得很好。
Cheers :)
干杯:)
回答by Nicolas Tyler
This works for me:
这对我有用：
private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
dataGridView1.Rows[0].Selected = false;
}
回答by Jacob Seleznev
Try setting DataGridView.AllowUserToAddRows = falsein constructor after InitializeComponent().
之后尝试DataGridView.AllowUserToAddRows = false在构造函数中设置 InitializeComponent()。
回答by Ajayadas
This work for me for clear selection on databind
这对我有用，可以明确选择数据绑定
Protected Sub GridCancel_DataBinding(sender As Object, e As EventArgs) Handles GridCancel.DataBinding
GridCancel.SelectedIndex = -1
End Sub
回答by ramires.cabral
Just put dataGridView1.ClearSelection();in load event of the form.
只需放入dataGridView1.ClearSelection();表单的加载事件即可。
回答by ramires.cabral
You can call dataGridView.ClearSelection() method inside form_Load event like this...
您可以像这样在 form_Load 事件中调用 dataGridView.ClearSelection() 方法...
private void Form1_Load(object sender, EventArgs e)
{
// You will get selectedCells count 1 here
DataGridViewSelectedCellCollection selectedCells = dataGridView.SelectedCells;
// Call clearSelection
dataGridView.ClearSelection();
// Now You will get selectedCells count 0 here
selectedCells = dataGridViewSchedule.SelectedCells;
}
回答by jhony3
You should try to put in Shown event datagridView.ClearCelection()and also datagridView.CurrentCell=nulland for example if you want to select row for deleting or changing informations just do if(datagridView.CurrentCell==null){
MessageBox.Show("You must select row");}it works for me
您应该尝试放入 Shown 事件datagridView.ClearCelection()，datagridView.CurrentCell=null例如，如果您想选择用于删除或更改信息的行，if(datagridView.CurrentCell==null){
MessageBox.Show("You must select row");}这对我有用
回答by daniele3004
The event to set for disabled selected row at start is this, and manage a FLAG to stop the ClearSelection
在开始时为禁用的选定行设置的事件是这个，并管理一个 FLAG 以停止 ClearSelection
private void dataGridView_SelectionChanged(object sender, EventArgs e)
{
if (FLAG==true)
{
dataGridView.ClearSelection();
FLAG=false;
}
}
回答by Nitin Patil
Try This may be helpful
试试这可能有帮助
private void dgv_order_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
{
dgv_order.CurrentCell.Selected = false;
dgv_order.ClearSelection();
}
回答by Soly
Sometimes, when you reload your form without closing your program, the first row will be highlighted. But it will not be selected, and you will get -1 for selected row index.
有时，当您在不关闭程序的情况下重新加载表单时，第一行将被突出显示。但它不会被选中，并且您将获得 -1 所选行索引。
You can do it just like this:
你可以这样做：
1. Store default styles when the form is loading:
1. 表单加载时存储默认样式：
Public Class aRoots
Dim df1, df2, df3, df4 As Color
Private Sub aRoots_Load(sender As Object, e As EventArgs) Handles Me.Load
df1 = DGV_Root.DefaultCellStyle.SelectionBackColor
df2 = DGV_Root.DefaultCellStyle.BackColor
df3 = DGV_Root.DefaultCellStyle.SelectionForeColor
df4 = DGV_Root.DefaultCellStyle.ForeColor
2. Change cell styles when interacting with datagridview:
2. 与datagridview交互时更改单元格样式：
Private Sub LoadRoot()
For i = 0 To 5
DGV_Root.Rows.Add()
For j = 0 To 3
DGV_Root.Item(j, i).Value = ...
Next
Next
'DGV_Root.ClearSelection() ==> instead of this use 2 lines below
DGV_Root.DefaultCellStyle.SelectionBackColor = df2
DGV_Root.DefaultCellStyle.SelectionForeColor = df4
End Sub
3. Change cell styles to default when selection is being changed like cell_click or cell_double click:
3. 更改单元格样式时将单元格样式更改为默认值，例如 cell_click 或 cell_double click：
Private Sub DGV_Root_CellMouseClick(sender As Object, e As DataGridViewCellMouseEventArgs) Handles DGV_Root.CellMouseClick
DGV_Root.DefaultCellStyle.SelectionBackColor = df1
DGV_Root.DefaultCellStyle.SelectionForeColor = df3
...
End Sub
4. restore all to default when u want to close form:
4.当你想关闭表单时，全部恢复为默认值：
Private Sub PbClose_Click(sender As Object, e As EventArgs) Handles PbClose.Click
BtnCancel.PerformClick()
DGV_Root.DefaultCellStyle.SelectionBackColor = df1
DGV_Root.DefaultCellStyle.BackColor = df2
DGV_Root.DefaultCellStyle.SelectionForeColor = df3
DGV_Root.DefaultCellStyle.ForeColor = df4
Me.Close()
End Sub
Hope this help you guys.
希望这对你们有帮助。
