如何在C＃windows应用程序的datagridview中输入键作为tab键 [英] How enter key behave as tab key in datagridview in C# windows application

问题描述

我使用了大量的代码，但我不明白输入键的行为方式如同tab键datagridview



我尝试了什么：

i use lots of code but i dont understand how enter key behave as tab key datagridview

What I have tried:

private void dgvSbill_CellEnter(object sender, DataGridViewCellEventArgs e)
 {
    if (dgvSbill.CurrentRow.Cells[e.ColumnIndex].ReadOnly)
    {
       SendKeys.Send("{tab}");

    }   
 }

second i used

private void dgvSbill_KeyPress(object sender, KeyPressEventArgs e)
{
    switch (e.KeyChar)
    {
        case (char)Keys.Enter:
            SendKeys.Send("{Tab}");
            break;
        default:
            break;
    }
}
i also check this process code but how it use i cant understand
using System.Diagnostics;
class MyDataGridView : DataGridView
{

    protected override bool ProcessDialogKey(Keys keyData)
    {
        if (keyData == Keys.Enter) {
            base.ProcessTabKey(Keys.Tab);
            return true;
        }
        return base.ProcessDialogKey(keyData);
    }

    protected override bool ProcessDataGridViewKey(KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Enter) {
            base.ProcessTabKey(Keys.Tab);
            return true;
        }
        return base.ProcessDataGridViewKey(e);
    }

}

哪里会用plz回复我非常紧急

提前感谢

where it will use plz reply me it very urgent
thanks in advance

推荐答案

请勿使用 SendKeys 。使用关键事件模拟​​进行UI开发通常被视为滥用;我同意这一点。您的示例只是一个证明这一点的原因。


在您的情况下，只需找出所选内容并选择网格视图的下一个/上一个元素。这取决于选择模式： DataGridView .SelectionMode属性（System.Windows.Forms） [ ^ ]。



假设您要更改所选单元格，如果您使用每单元格选择模式， CellSelect 。然后根据当前单元格的行和列找出选择的单元格，按照您想要的方式计算下一个/上一个单元格，然后选择它。这两件事都是使用属性 SelectedCell 完成的： DataGridView.SelectedCells属性（System.Windows.Forms） [ ^ ]。



最有可能的是，你需要它只有一个单元格，所以 SelectedCell 不会有多个元素。通过将属性 MultiSelect 设置为false来实现： DataGridView.MultiSelect属性（System.Windows.Forms） [ ^ ]。



要捕获Enter，而不是 KeyPress ，您应该处理事件 KeyDown 。



我有一个更好的主意：不要这样做。 DataGridView 已经有了很好的导航和用于更改选择的正确密钥;所有合理的用户都习惯了。

-SA

Don't use SendKeys. Using key event simulation for UI development is usually considered as abuse; and I agree with that. Your example is just one to justify that.

In your case, just find out what is selected and select next/previous element of the grid view. It depends on the selection mode: DataGridView.SelectionMode Property (System.Windows.Forms)[^].

Let's say, you want to change selected cell, in case you use per-cell selection mode, CellSelect. Then find out what cell is selected, based on the current cell's row and column, calculate next/previous cell the way you want, and then select it. Both things are done using the property SelectedCell: DataGridView.SelectedCells Property (System.Windows.Forms)[^].

Most likely, you will need that it was only one cell, so SelectedCell won't have more than one element. It is achieved by setting the property MultiSelect to false: DataGridView.MultiSelect Property (System.Windows.Forms)[^].

To capture Enter, instead of KeyPress, you should handle the event KeyDown.

I have a better idea: don't do it. DataGridView already has good navigation and proper keys used to change selection; all reasonable users used to them.

—SA

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