防止datagridview单元格创建新行.

问题描述：

我有一个datagridview，可用来从用户那里获取输入.

问题是，每当我开始在任何单元格中输入值时，都会自动添加新行.我仅在当前行的最后一个单元格完成编辑后才需要添加新行.

另外，我需要设置可添加的新行数的限制.

谢谢.

Hi,

I have a datagridview which I use to get input from user.

The problem is that whenever I start inputting the values in any of the cells, a new row is automatically added. I need a new row to be added only when the last cell in the current row has finished with editing.

Also I need to set limit on how many new rows can be added.

Thank you.

答

将datagridview的属性-AllowUserToAddRows设置为False

点击按钮添加行.
按钮单击事件参数

Set the property of datagridview - AllowUserToAddRows as False

Give a button to add rows.
button click event argument

{
   datatgridview.Rows.Add();
}

if(datagirdview.Rows.Count < n (your limit))
{
   Disable the Button (add row)
}

谢谢
Saranya1388

Thanks
Saranya1388

看看这个，可能会对您有所帮助.
注意:VB中的代码，请尝试更改C#

Look at this, it may help you.
Note: Code in VB, Try to change C#

Set DataGridView1-AllowUserToAddRows as False 
Private Sub DataGridView1_CellContentClick1(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick

            If DataGridView1.Rows.Count > 0 Then
                If e.RowIndex >= 0 Then
                    temprowid = e.RowIndex
                 End If
           End If
End Sub
Private Sub DataGridView1_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles DataGridView1.KeyPress
          //if (e.KeyChar == (char)Keys.Tab) //--From CSharp
           If e.KeyChar.Equals(Keys.Tab) Then //--Check This is Correct or Not
            If temprowid >= 0 Then
               If (DataGridView1.Columns(DataGridView1.CurrentCell.ColumnIndex()).HeaderText.Equals("LastCellName")) Then
                   BindingSource1.AddNew()
               End If
            End If
          End If
   End Sub

将DataGridView1-AllowUserToAddRows设置为错误

Set DataGridView1-AllowUserToAddRows as False

int temprowid=0;
private void DataGridView1_CellContentClick1(object sender, DataGridViewCellCancelEventArgs e)
{
     if(DataGridView1.Rows.Count > 0 )
     {
        if( e.RowIndex >= 0)
        temprowid = e.RowIndex;
     }
}
private void DataGridView1_KeyPress(object sender, KeyPressEventArgs e)
{
   if (e.KeyChar == (char)Keys.Tab)
   {
      if(temprowid >= 0) 
      {
if(DataGridView1.Columns[DataGridView1.CurrentCell.ColumnIndex].HeaderText.Equals("LastCellName"))
         FillGrid(1);
      }
   }
}
Private Void FillGrid(int RowCount)
{
     foreach (DataGridViewRow r in DataGridView1.Rows)
     {
        DataGridView1.Rows.Remove(r);
     }
     DataGridView1.DataSource = null;
     if (DataGridView1.Columns.Count > 0)
     {
          DataGridView1.Columns.Clear();
     }
     DataTable dt=new DataTable()
     dt=dc.GetDataTable("Select Statement"); //--Returns DataTable
     if(Rowount > 0)
     {
        For(int i=0;i<RowCount;i++)
        {
           DataRow dr = dt.NewRow();
           dt.Rows.Add(dr);
        }
     }
      DataGridView1.DataSource=dt;
}

防止datagridview单元格创建新行.

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