本文介绍了如何在C#中利用GridView控件，通过回车键实现横向移焦点的功能，包括如何在DataGridView中保存焦点位置，并在按下Enter键时进行特定的操作，如添加新行。
//回车切换焦点方法，只需在界面设置控件的TabIndex即可，以后用
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
if ((!(ActiveControl is Button)) && (keyData == Keys.Up || keyData == Keys.Down || keyData == Keys.Enter))
{
if (keyData == Keys.Enter)
{
System.Windows.Forms.SendKeys.Send("{TAB}");
return true;
}
if (keyData == Keys.Down)
System.Windows.Forms.SendKeys.Send("{TAB}");
else
SendKeys.Send("+{Tab}");
return true;
}
else
return base.ProcessCmdKey(ref msg, keyData);
}
// GridView中回车横向移焦点，保存好些方法
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
enterkey = false;
if (keyData == Keys.Enter)
{
if (this.dataGridView1.IsCurrentCellInEditMode)
{
enterkey = true;
if (this.dataGridView1.CurrentCell.ColumnIndex < this.dataGridView1.ColumnCount - 1)
{
if (this.dataGridView1.CurrentCell.ColumnIndex == 5)
{
DataRow row = dt.NewRow();
row["ID"] = dt.Rows.Count + 1;
row["QrCode"] = "";
row["JiuKuanName"] = "";
row["ShuLiang"] = "0";
row["DanJia"] = "0";
row["JinE"] = "0";
dt.Rows.Add(row);//添加新行
this.dataGridView1.DataSource = dt;
dataGridView1.CurrentCell = dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells[2];
return false; ;
}
else
{
this.dataGridView1.CurrentCell = this.dataGridView1[this.dataGridView1.CurrentCell.ColumnIndex + 3,this.dataGridView1.CurrentCell.RowIndex];
}
}
}
}
return base.ProcessCmdKey(ref msg, keyData);
}
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