Ext.Net中CheckboxSelectionModel的动态隐藏（显示），一定条件下的隐藏（不让选择），获得多选栏位的信息，及后台控件的动态创建...
(1) Ext.Net 中CheckboxSelectionModel在一定的條件下隱藏特定的row
<head id="Head1" runat="server">
??? <title></title>
??? <script? type="text/javascript">
?????????? var MyCheckBox = function (v, p, record) {??????????????? //固定格式，不變
??????????? if (record.data.SPECVER <4) {?????//紅色的字體為欄位名稱(chēng)（type= int）
??????????????? return "";
??????????? }
??????????? return '<div class="x-grid3-row-checker">';????? //固定格式，不變
??????? };
??? </script>???
</head>
并在下面的代碼添加CustomConfig，Listeners屬性? ：
???????? <SelectionModel>
?????????? ? ?? <ext:CheckboxSelectionModel ID="CheckboxSelectionModel1"?? runat="server">?? //生成CheckBox
????????????? ????? <CustomConfig>??????????
??????????????? ????????? <ext:ConfigItem Name="renderer" Value="MyCheckBox" Mode="Raw" />????????//javascript Function 名稱(chēng)
???????????????????? </CustomConfig>
???????????????????? <Listeners>
?????????????????????????? <BeforeRowSelect Handler="return record.data.SPECVER>=4;" />?????????//欄位名稱(chēng)，需要變動(dòng)
???????????????????? </Listeners>
????????????????</ext:CheckboxSelectionModel>???????????????????????????????????????????????????????????
??????????</SelectionModel>
?
（2 ）Ext.Net 中動(dòng)態(tài)的隱藏（Hidden屬性）CheckBox? （CheckboxSelectionModel ）：
???????????????
protected void btnQueryHistory_Click(object sender, Ext.Net.DirectEventArgs e)
{
?????? GridPanel. ColumnModel.SetHidden(0,true);????????? //(紅色的)為GridPanel 名稱(chēng)?? ，（綠色的）為要隱藏的欄位
}
?（3）Ext.Net中獲得被多選中的row ：
??????? 1.））集中批次處理：
????????????? RowSelectionModel lv_RowSelected = this.gpControlInfo.SelectionModel.Primary as RowSelectionModel;
????????????? if (lv_RowSelected.SelectedRows.Count > 0)
???????????? {
???????????????????? string sysIDS = "";
???????????????????? foreach (SelectedRow row in sm.SelectedRows)
???????? ?????????? {
?????????????? ?????????? sysIDS += row.RecordID + ";";??????????????//RecordID的設(shè)置
????????????????????}
????????????? }
????????????? lv_RowSelected.ClearSelections();???? //需要清空所有，否則，下次沒(méi)有選中任何的時(shí)候，SelectedRows.Count 還是為上次的值
?????????? RecordID的設(shè)置,在Store的代碼中添加（紅色的部分）：
????????? <ext:Store ID="stoControlInfo" runat="server" GroupDir="ASC">
??????????????? <Reader>???????????????
??????????????????? <ext:JsonReader IDProperty ="FORMSYSID">????????????//??為RecordID的值，根據(jù)需要相應(yīng)的更改???????????
??????????????????? </ext:JsonReader>????????????????
??????????????? </Reader>
??????????????? <AutoLoadParams>
??????????????????? <ext:Parameter Name="start" Mode="Raw" Value="0">
??????????????????? </ext:Parameter>
??????????????????? <ext:Parameter Name="limit" Mode="Raw" Value="15">
??????????????????? </ext:Parameter>
??????????????? </AutoLoadParams>
???????? </ext:Store>
???? 2.))? 單個(gè)的處理：
???????? <ext:Button?
??????????????????ID=""?
??????????????????runat=""?
??????????????????Text=""?
??????????????????Icon=""????????????????????????????????????????????????????
????????????????? X =""?
????????????????? Y ="" >
???????????????? <DirectEvents>?
??????????????????????? <Click OnEvent="btnActivateForm_Click">?????????????????//后臺(tái)Button事件?
????????????????????????????? <ExtraParams>???? //添加如下代碼，gpControlInfo為GridPanel的ID
??????????????????????????????????? <ext:Parameter Name="Values" Value="Ext.encode(#{gpControlInfo}.getRowsValues({selectedOnly:true}))" Mode="Raw" />
????????????????????????????? </ExtraParams>??
???????????????????????? </Click>?????????????????????????????????????
????????????????? </DirectEvents>
???? ?? </ext:Button>
?????? 后臺(tái)的處理：
????????? string json = e.ExtraParams["Values"];
????????? Dictionary<string, string>[] lv_Row = JSON.Deserialize<Dictionary<string, string>[]>(v_Json);
??????????? foreach (Dictionary<string, string> row in lv_Row)
??????????? {
??????????????? foreach (KeyValuePair<string, string> keyvaluePaire in row)
??????????????? {
??????????????????? //可以取得所有的欄位及欄位值，
???????????????????//也可以取得想要的（相對(duì)應(yīng)的）
??????????????????? if (keyvaluePaire.Key == "SPECNO")
??????????????????? {
??????????????????????? pv_StrSpecNO = keyvaluePaire.Value;
??????????????????? }
??????????????????? else if (keyvaluePaire.Key == "SPECVER")
??????????????????? {
??????????????????????? pv_StrSpecVer = keyvaluePaire.Value;
??????????????????? }
??????????????? }
????????????}
（4）Ext.Net后臺(tái)動(dòng)態(tài)實(shí)現(xiàn)GridPanel欄位的添加：
??????????? this.stoControlInfo.AddField(new RecordField("SYSID", RecordFieldType.String));
??????????? this.stoControlInfo.AddField(new RecordField("FORMID", RecordFieldType.String));
???????????
??????????? this.gpControlInfo.ColumnModel.Columns.Add(new Column { Header = "SYSID_Show", DataIndex = "SYSID", Width = 10 });
??????????? this.gpControlInfo.ColumnModel.Columns.Add(new Column { Header = "FORMID_Show", DataIndex = "FORMID", Width = 130 });
?
??????? DataIndex必須和RecordField的相同（如紅色的），要不然有欄位顯示，但是下面沒(méi)有數(shù)據(jù)的哦！
?
?
????注：以上經(jīng)過(guò)測(cè)試是正確的，請(qǐng)根據(jù)自己的需要做出變通，不對(duì)的地方或者是還有好的方法請(qǐng)告知，不勝感激！
??? 另外：（1）一個(gè)好的Ext.Net基礎(chǔ)學(xué)習(xí)網(wǎng)站是:www.Ext.Net，有各控件的實(shí)例實(shí)現(xiàn)
????????????? (2)相關(guān)知識(shí)查找可以在官網(wǎng)（www.Ext.Net）中的右上角的"Search“框中進(jìn)行查找，比在Baidu能查到更多的相關(guān)技術(shù)及實(shí)現(xiàn)！查找的是英文版的哦！
轉(zhuǎn)載于:https://www.cnblogs.com/alexzp/archive/2011/12/23/2298890.html
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