C＃Winforms DataGridView时间列 [英] C# Winforms DataGridView Time Column

问题描述

如何在DataGridView中显示时间选择列？

How to show a Time-picker column in DataGridView?

我不需要选择日期。我只需要时间选择。

I don't need to pick Date. I only need time to be selected.

推荐答案

实际上，有一种比创建自定义DataGridView列更好的方法。我目前为我的应用程序做的是当我的DataGridView的TIMESTAMP列被输入时，我直接在单元格上定位一个DateTimePicker控件。当用户从单元格中点击（从而确认其选择）时，DateTimePicker Visible设置为False，并将DateTimePicker的值放入单元格中。默认情况下，DateTimePicker控件的Visibility设置为False直到我需要它。我也使用这个ComboBox控件在常规单元格，用户无法输入自定义值，并且必须使用设置屏幕中的项目列表。这种技术非常适合做伪造。我没有代码随时可用，但是更少的代码和更容易维护IMHO。

Actually, there is a better way than creating a custom DataGridView column. What I currently do for my application is when the TIMESTAMP column of my DataGridView is entered, I position a DateTimePicker control directly over the cell. When the user has clicked out of the cell (thus confirming his selection), the DateTimePicker Visible is set to False and the DateTimePicker's value is put into the cell. By default, the DateTimePicker control Visibility is set to False until I need it. I also use this for ComboBox controls on regular cells where the user cannot enter a custom value and has to use the list of items from the Setup Screen. This technique is great for faking it. I don't have the code readily available, but it is less code and easier to maintain IMHO.

上述和以下技术是从伪造替代控件在Win Forms 2.0中的DataGridView控件中

编辑：这里是代码 -

Here is the code -

private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
            if (selectAllToolStripMenuItem.Checked)
                selectAllToolStripMenuItem.Checked = false;

            if (dtPicker.Visible)
                dtPicker.Visible = false;

            if (e.ColumnIndex >= 0)
            {
                if (dataGridView1.Columns[e.ColumnIndex].Name == "Delete")
                {
                    if (adminIsLoggedIn)
                    {
                        removeRow(e);
                    }
                    else
                    {
                        MessageBox.Show("You must be logged in as an Administrator in order to change the facility configuration.", "Delete Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                }
                else if (dataGridView1.Columns[e.ColumnIndex].Name == "TIMESTAMP")
                {
                    if (adminIsLoggedIn)
                    {
                        setNewCellDate(e);
                    }
                }
                .....
            }
            // ---

}

private void setNewCellDate(DataGridViewCellEventArgs e)
{
            dtPicker.Size = dataGridView1.CurrentCell.Size;
            dtPicker.Top = dataGridView1.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, true).Top + dataGridView1.Top;
            dtPicker.Left = dataGridView1.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, true).Left + dataGridView1.Left;
            if (!(object.Equals(Convert.ToString(dataGridView1.CurrentCell.Value), "")))
                dtPicker.Value = Convert.ToDateTime(dataGridView1.CurrentCell.Value);
            dtPicker.Visible = true;
}

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