C# DataGridView的單元格中只能輸入數字
控件類型：DataGridView
控件名稱：dgvGift_Condition
裏面用到的：IsNumeric、NotePastText、RestoreText 等請參見 前一日志“TextBox中只能輸入數字”。
下面例子中 dgvGift_Condition中 第2列和第4列 只能輸入數字
private DataGridViewTextBoxEditingControl EditingControl = new DataGridViewTextBoxEditingControl();
private void dgvGift_Condition_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
if (this.dgvGift_Condition.CurrentCell.ColumnIndex == 1 || this.dgvGift_Condition.CurrentCell.ColumnIndex == 3)
{
EditingControl = (DataGridViewTextBoxEditingControl)(e.Control);
EditingControl.KeyPress += new KeyPressEventHandler(EditingControl_KeyPress);
EditingControl.TextChanged += new EventHandler(EditingControl_TextChanged);
}
}
void EditingControl_TextChanged(object sender, EventArgs e)
{
if (this.IsNumeric(this.EditingControl.Text, true, false))
{
this.NotePastText(this.EditingControl, ref PastText);
}
else
{
this.RestoreText(this.EditingControl, PastText);
}
}
void EditingControl_KeyPress(object sender, KeyPressEventArgs e)
{
this.CheckKeyIn(e, false);
}
private void dgvGift_Condition_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)
{
if (e.ColumnIndex == 1 || e.ColumnIndex == 3)
{
TextBox tb = new TextBox();
if (this.dgvGift_Condition.Rows[e.RowIndex].Cells[e.ColumnIndex].Value == null)
{
tb.Text = "";
}
else
{
tb.Text = this.dgvGift_Condition.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString();
}
this.NotePastText(tb, ref PastText);
}
}
private void dgvGift_Condition_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
EditingControl.KeyPress -= EditingControl_KeyPress;
EditingControl.TextChanged -= EditingControl_TextChanged;
}