小编Rob*_*n L的帖子

提交表单后,似乎字段值被设置为空.我正在做一些表单验证; 如果表单无效我正在显示错误列表中的错误消息,但我希望字段值保持不变.有没有办法做到这一点？

这是我验证表单的视图:

@app.route('/booking', methods=['GET', 'POST'])
def booking():
    errors = [] 
    if request.method == 'GET':     
        return render_template('booking.html', errors=errors)
    else:
        # grab values from form fields and store them in objects
        start_date = request.form['start_date']
        end_date = request.form['end_date']
        name = request.form['name'].strip()
        email = request.form['email'].strip()       

        # check if all fields are non-empty and raise an error if not
        if not start_date or not end_date or not name or not email:
            errors.append('Please enter all the fields.')
        else:
            # converts dates to Unix time-stamp for …

我正在尝试创建一个事件,当我在datgridview中右键单击一行时显示上下文菜单.

以下是正在发生的问题的图像:

这是我目前使用的代码:

Private Sub dgvStudents_CellMouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles dgvStudents.CellMouseDown
    Dim rowClicked As DataGridView.HitTestInfo = dgvStudents.HitTest(e.X, e.Y)
    'Select Right Clicked Row if its not the header row
    If e.Button = Windows.Forms.MouseButtons.Right AndAlso e.RowIndex > -1 Then
        'Clear any currently sellected rows
        dgvStudents.ClearSelection()
        Me.dgvStudents.Rows(e.RowIndex).Selected = True
        ContextMenuStrip1.Show(dgvStudents, Control.MousePosition)

    End If
End Sub

PS屏幕截图不会显示我的光标>.>但它肯定不会与上下文菜单同步!

编辑:好的伙计我已经解决了,

我只是将Control.MousePosition替换为MousePosition,它就可以了!