日韩欧美一级大片,日韩中字在线综合,国产福利在线永久

DevExpress XtraGrid網(wǎng)格控件示例五：驗(yàn)證終端用戶輸入的數(shù)據(jù)

原創(chuàng)|其它|編輯：郝浩|2012-10-19 17:39:19.000|閱讀 1452 次

概述：本示例中禁用了無(wú)效的“colBudget”列單元格賦值。單元格值應(yīng)該大于零且小于1,000,000。BaseView.ValidatingEditor事件處理檢查輸入值的有效性。如果出現(xiàn)無(wú)效的單元格賦值，BaseView.InvalidValueException事件會(huì)顯示異常消息框。在這樣情況下，調(diào)用GridView.HideEditor方法以便放棄所做的更改。

# 界面/圖表報(bào)表/文檔/IDE等千款熱門軟控件火熱銷售中 >>

本示例中禁用了無(wú)效的“colBudget”列單元格賦值。單元格值應(yīng)該大于零且小于1,000,000。BaseView.ValidatingEditor事件處理檢查輸入值的有效性。如果出現(xiàn)無(wú)效的單元格賦值，BaseView.InvalidValueException事件會(huì)顯示異常消息框。在這樣情況下，調(diào)用GridView.HideEditor方法以便放棄所做的更改。

using DevExpress.XtraEditors.Controls;
// ...
private void gridView1_ValidatingEditor(object sender, BaseContainerValidateEditorEventArgs e) {
if (gridView1.FocusedColumn.Name != "colBudget") return;
if ((Convert.ToInt32(e.Value) < 0) || (Convert.ToInt32(e.Value) > 1000000))
e.Valid = false;
}
private void gridView1_InvalidValueException(object sender, InvalidValueExceptionEventArgs e) {
e.ExceptionMode = ExceptionMode.DisplayError;
e.WindowCaption = "Input Error";
e.ErrorText = "The value should be greater than 0 and less than 1,000,000";
// Destroying the editor and discarding the changes made within the edited cell
gridView1.HideEditor();
}

Imports DevExpress.XtraEditors.Controls
' ...
Private Sub GridView1_ValidatingEditor(ByVal sender As Object, _
ByVal e As BaseContainerValidateEditorEventArgs) Handles GridView1.ValidatingEditor
If GridView1.FocusedColumn.Name <> "colBudget" Then Exit Sub
If (Convert.ToInt32(e.Value) < 0) Or (Convert.ToInt32(e.Value) > 1000000) Then
e.Valid = False
End If
End Sub
Private Sub GridView1_InvalidValueException(ByVal sender As Object, _
ByVal e As ValidatingEditorEventArgs) Handles GridView1.InvalidValueException
e.ExceptionMode = ExceptionMode.DisplayError
e.WindowCaption = "Input Error"
e.WindowText = "The value should be greater than 0 and less than 1,000,000"
' Destroying the editor and discarding the changes made within the edited cell
GridView1.HideEditor()
End Sub

標(biāo)簽：

本站文章除注明轉(zhuǎn)載外，均為本站原創(chuàng)或翻譯。歡迎任何形式的轉(zhuǎn)載，但請(qǐng)務(wù)必注明出處、不得修改原文相關(guān)鏈接，如果存在內(nèi)容上的異議請(qǐng)郵件反饋至chenjj@ke049m.cn

文章轉(zhuǎn)載自：DevExpress中文網(wǎng)

上一篇：DevExpress XtraGrid網(wǎng)格控件示例六：添加非綁定列下一篇：DevExpress XtraGrid網(wǎng)格控件示例四：初始化新建行的單元格