DataGridView在开头没有选定的行

问题描述 投票:15回答:11

在我的WinForms中,我有DataGridView。我想一次选择完整的行,所以我将SelectionMode设置为FullRowSelect。现在我遇到了问题,因为在开始时我的表单为第一行加下划线(所选行的集合为空,第一行未选中但仅加下划线)。我尝试了很多东西,比如:

    private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
    {
        dataGridView1.ClearSelection();
    }

一切都失败了,因为事实上没有选择。

我该怎样摆脱这个下划线?

谢谢你的帮助!

c# .net winforms datagridview
11个回答
14
投票

这对我有用:

private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
    dataGridView1.Rows[0].Selected = false;
}

0
投票

如果这是因为它在初始加载时引发了不需要的GridView1_SelectionChanged事件,你可以使用一个标志来处理这个

public partial class YourFormName
{ 
    private bool IsReady= false;

    private void YourFormName_Load(object sender, EventArgs e)
    { 
           //Load your GridView1...
           //Format your GridView1...
            IsReady = true;
    }
    void GridView1_SelectionChanged(object sender, EventArgs e)
    {
         if (!IsReady) 
             return;
         //do the rest of the stuffs
    }
}

0
投票

有时,当您在不关闭程序的情况下重新加载表单时,第一行将突出显示。但它不会被选中,并且您将为所选行索引获得-1。

你可以这样做:

1.加载表单时存储默认样式:

 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.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.在更改选择时将单元格样式更改为默认值,如cell_click或cell_double单击:

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.当您想关闭表单时,将全部恢复为默认值:

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

希望这能帮到你们。


12
投票

只需将dataGridView1.ClearSelection();放入表单的加载事件中即可。


12
投票

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。我将使用这段代码隐藏它,而不是无法选择:

dataGridView1.DefaultCellStyle.SelectionBackColor = dataGridView1.DefaultCellStyle.BackColor;
dataGridView1.DefaultCellStyle.SelectionForeColor = dataGridView1.DefaultCellStyle.ForeColor;

因此,如果有人只想隐藏选择,它将会很好地工作。

干杯:)


2
投票

你应该尝试放入显示事件datagridView.ClearCelection()datagridView.CurrentCell=null,例如,如果你想选择行删除或更改信息只是做if(datagridView.CurrentCell==null){ MessageBox.Show("You must select row");}它适用于我


2
投票

试试这可能会有所帮助

private void dgv_order_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
        {
            dgv_order.CurrentCell.Selected = false;
            dgv_order.ClearSelection();
        }

1
投票

尝试在DataGridView.AllowUserToAddRows = false之后在构造函数中设置InitializeComponent()


1
投票

你可以像这样调用form_Load事件中的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;
    }

0
投票

这对我来说可以清楚地选择数据绑定

Protected Sub GridCancel_DataBinding(sender As Object, e As EventArgs) Handles GridCancel.DataBinding
    GridCancel.SelectedIndex = -1

End Sub

0
投票

在开始时为禁用的选定行设置的事件是这个,并管理FLAG以停止ClearSelection

private void dataGridView_SelectionChanged(object sender, EventArgs e)
{

    if (FLAG==true)
    {
       dataGridView.ClearSelection();
       FLAG=false;
    }
}
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