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Here is a TreeView control code I wrote by myself:
using System; using System.Text; using System.Web.UI; using System.Drawing; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.ComponentModel; using System.IO;
USING WIM.DATA; USING WIM.DATA.COLLECTIONS; USING WIM.BUSINESSFACADE
Namespace Wim.WebControls {?? ///
?? /// TreeView's summary description. ?? ///
?? [DefaultProperty ("ID"), ToolboxData ("
")]
?? [Designer (TreeViewDesigner)]]]]
?? Public class treeview: wim.webcontrols.controlbase
?? {
????? #Region member variable
????? private string m_SchemaName; ????? private string m_TreeCodeColumn; ????? private string m_ValueColumn; ????? private string m_TextColumn; ????? private string m_ChildClick; ????? private string m_ImageUrl; ????? private string m_DataValue; ????? private string m_RedirectUrl; ????? private string m_TargetFrame; ????? private bool m_IsClearTrack = true; ????? private int m_SelectIndex = -1; ????? private DOC M_DATASOURCE; ????? private queryconditioncollection m_dataqueryconditions; ????? private sortcondition m_datasortcondition;
????? #endregion
????? #Region property settings
????? ///
????? /// architecture name ????? ///
????? [bindable (TRUE), Category ("Wim"), DefaultValue ("ORG_Organ"), Description ("Schema Name")]]
????? public string schemaname
????? {
???????? get
???????? {
??????????? Return M_SChemaname;
????????}
???????? set
???????? {
??????????? m_schemaname = value;
????????}
?????}
????? ///
????? /// encoding column name ????? ///
????? [Bindable (TRUE), Category ("WIM"), DefaultValue ("Treecode"), Description ("Code Column Name)]
????? public string? Treecodecolumn
????? {
???????? get
???????? {
??????????? Return M_Treecodecolumn
????????}
???????? set
???????? {??????????? m_treecodecolumn = value;
????????}
?????}
????? ///
????? /// 取 value column name ????? ///
????? [bindable (TRUE), Category ("Wim"), DefaultValue ("ID"), Description ("Value Route Name")]
????? public string? ValueColumn
????? {
???????? get
???????? {
??????????? Return M_ValueColumn
????????}
???????? set
???????? {
??????????? m_Valuecolumn = value;
????????}
?????}
????? ///
????? /// display column name ????? ///
????? [Bindable (True), Category ("Wim"), DefaultValue ("Name"), Description ("Show Column Name)]
????? public string? TextColumn
????? {
???????? get
???????? {
??????????? Return M_TextColumn
????????}
???????? set
???????? {
??????????? m_textColumn = value;
????????}
?????}
????? ///
????? /// Click the event ????? ///
????? [Bindable (True), Category ("Wim"), DefaultValue (""), Description ("Click Events"]
????? public string? ChildClick
????? {
???????? get
???????? {
??????????? Return M_ChildClick;
????????}
???????? set
???????? {
???????????? m_childclick = value;
????????}
?????}
????? ///
????? /// picture path ????? ///
????? [bindable (TRUE), Category ("WIM"), DefaultValue ("../ images / organtree /"), Description ("Image Path")]
????? public string? imageurl
????? {
???????? get
???????? {
??????????? RETURN M_IMAGEURL;
????????}
???????? set
???????? {
??????????? m_imageurl = value;
????????}
?????}
????? ///
????? /// data source document object ????? ///
????? [Bindable (True), Category ("WIM"), DefaultValue (NULL), Description ("Data Source Document Object")]
????? public doc datasource
????? {
???????? get
???????? {
??????????? Return M_DataSource;
????????}
???????? set
???????? {
??????????? m_datasource = value; ????????}
?????}
?????
????? ///
????? /// The initial default value ????? ///
????? [Bindable (True), Category ("WIM"), DefaultValue (""), Description ("Initial Default")]
????? public string DataValue
????? {
???????? get
???????? {
??????????? Return M_DataValue;
????????}
???????? set
???????? {
??????????? m_datavalue = value;
????????}
?????}
????? ///
????? /// The connection address when you click the node ????? ///
????? [Bindable (True), Category ("WIM"), DefaultValue (""), Description ("Click the connection address when the node.")]
????? public string redirecturl
????? {
???????? get
???????? {
??????????? Return M_RedirectURL;
????????}
???????? set
???????? {
??????????? m_redirecturl = value;
????????}
?????}
????? ///
????? /// The target object name when you click the node ????? ///
????? [Bindable (True), Category ("Wim"), DefaultValue (""), Description ("Click on the node to redirect the target object name.")]
????? public string targetframe
????? {
???????? get
???????? {
??????????? Return M_TargetFrame
????????}
???????? set
???????? {
??????????? m_targetframe = value;
????????}
?????}
????? ///
????? /// Do you need to clear the history path ????? ///
????? [Bindable (True), Category ("WIM"), DefaultValue (TRUE), Description ("Do you need to clear history.")]
????? public bool iscleartrack
????? {
???????? get
???????? {
??????????? Return m_iscleartrack;
????????}
???????? set
???????? {
??????????? m_iscleartrack = value;
????????}
?????}
????? ///
????? /// Query conditions????? ///
????? [Bindable (True), Category ("Wim"), DEFAULTVALUE (NULL), Description ("Query Conditions when getting or setting data")]
????? public queryconditionCollection DataQueryConditions
????? {
???????? get
???????? {
??????????? if (m_dataqueryconditions == null) ??????????? {
?????????????? m_dataqueryconditions = new queryconditioncollection ();
???????????}
??????????? Return M_DataQueryConditions;
????????}
???????? set
???????? {
??????????? m_dataqueryconditions = value;
????????}
?????}
????? ///
????? /// sort object ????? ///
????? [Bindable (True), Category ("Wim"), DEFAULTVALUE (NULL), DESCRIPTION ("Sampling Objects when getting Data")]]
????? public sortcondition datasortcondition
????? {
???????? set
???????? {
??????????? m_datasortcondition = value;
????????}
???????? get
???????? {
??????????? return m_datasortcondition;
????????}
?????}
????? #endregion
#Region main body
????? ///
????? /// presented this control to the specified output parameter. ????? ///
????? ///
HTML writer to write
????? protected override void render (HTMLTextWriter Output)
????? {
???????? placeholder control = new placeholder ();
???????? control.page = this.page;
???????? this.enableviewState = false
???????? this.initparameter ();
???????? Literal Literal = new literal (); ???????? Literal.Text = this.treehtml (); ???????? control.controls.add (Litral) ;
????????? // Add hidden control ???????? basefunction Basfun = new basefunction (); ???????? HTMLINPUTHIDDEN HVAL = BASFun.creaHid (ID, m_Datavalue);? ??????? control.controls.add (hval); ???????? HTMLINPUTHIDDEN HTXT = BASFUN.CREAHID (ID "Text", ""); ???????? control .Controls.add (htxt);
???????? // Output public script block ????????????????????????????????????????????????????????????????????????????????????????????????????????????; ???????? // Output Private script ???????? Control.page.registerStartupScript (ID "script", this.buildprivatescript ());
???????? control.renderControl (output); ?????}
????? #endregion ????? #Region variable initialization
????? private void initparameter () ????? {???????? {(m_treecodecolumn == null) || (m_treecodecolumn == ")) ???????? {??????????? m_treecodecolumn = "trecode"; ????????} ????????} ((M_TextColumn == Null) || (m_textColumn == " ")) ????????? {??????????? m_textColumn =" name "; ????????} ????????} ((M_ValueColumn) == NULL) || (m_valuecolumn == "")) ???????????? M_ValueColumn = "ID"; ????????}? ??????? f ((m_schemaname == null) || (m_schemaname == "")) ????????????? m_schemaname = "org_organ" ; ????????} ???????? IF (m_imageurl == null) || (m_imageurl == "")) ??????? {????? ?????? m_imageurl = "../ images / organtree /"; ????????} ???????? IF (m_childclick == null) || (m_childclick == " ")) ????????? {???????????? m_childclick =" "; ????????} ????????} ((m_redirecturl = = null) || (m_redirecturl == ")) ????????????? M_redirecturl =" "; ????????} ??? ????? IF ((m_targetframe == null) || (m_targetframe == ")) ???????????? m_targetframe =" Self "; ???????} ???????? IF (this. m_datasource == NULL) ???????????? m_datasource = this.getdataSource (m_schemaname); ????????} ?????}
????? private doc getDataSource (string schecess) ????? {???????? DocManagement DM = New DocManagement (userSessionID);
???????? Doc Result = DM.GETDOC (m_schemaname, "view", m_datasortcondition, m_dataqueryconditions);
???????? Return RESULT; ?????}
????? #endregion
????? #Region main function ????? ///
????? /// get the code of the tree structure ????? ///
????? ///
?????pring treehtml ()
????? {
???????? StringBuilder html = new stringbuilder ();
???????? // Coiled type
???????? String lineestyle
???????? // leaf node type
???????? String Leafstyle
???????? // Current node level
???????? INT level = 0;
???????? // Run the total number of child nodes in the current level
???????? int [] levelsonnumberlist = new int rt [52];
???????? // runtime record the child node count of the current level
???????? int [] levelsoncounterlist = new int [52];
???????? // gacred the EntityTable object of the menu
???????? EntityTable Table = this.m_datasource.entityTable;
???????? // record the number of child points (recalculated results)
???????? int [] sonnumberlist = recalculateparentNumber (Table, this.m_treecodecolumn);
???????? // initialize the value ???????? for (int i = 0; i <52; i ) ??????? {?????? ????? levelsonnumberlist [i] = 0; ??????????? levelsoncounterlist [i] = 0; ????????}
???????? for (int i = 0; i ???????????? // indicate whether the node is displayed ?????????????????????????????? (Item [m_valuecolumn] .Value == m_datavalue) ??????????? {????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?? SELECTED = true; ???????????} ??????????? // determine the line style of the cable ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? "" "; ??????????? for (int J = 1; j ??????????? // determine the type of directory and leaves ??????????? f (SonnumberList [i] == 0) ?????????? ? {?????????????? // leaf ?????????????? f (LevelsonNumberlist [level - 1] == levelsoncounterlist [level - 1]) ?????????????? {????????????????? // leaf-level node, there is no brothers node (ie the last child node) ??????????????????????????? leafstyle = "2"; ?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?? Else ???????????????????????? odor-level node, and after another brother node? ???????????????? leafstyle = "3"; ??????????????} ???????????}? ??????????? Else ??????????? {?????????????? // directory?????? ???? i (Levelsonnumberlist [level - 1] <= levelsoncounterlist [level - 1]) ???????????????????????????????????????????????????????????????????????????????????????????????????????????? ??? // directory node, and have not jumped to the next superior node ????????????????? leafstyle = "41"; ???????? ?????} ?????????????? ELSE ?????????????? {?????????????? ??? // directory node, and have been jumped to the next superior node ????????????????? leafstyle = "51"; ????????? ?????} ???????????} ??????????? // displays a node ??????????? HTML.Append (GetMenuItem (Item, LINESTYLE, Leafstyle, Level, SELECTED, M_VALUECOLUMN, M_TEXTCOLUMN, M_TREECODECOLUMN, M_TREECODECOLUMN, M_IMAGEURL )); ???????????? // If the number of sons of the node is not 0, insert a layer of control the lower-level submenu ??????????? IF (SonNumberList [i ]> 0) ??????????? {?????????????? HTML.APpend (" "); ???????????} ??????????? IF ((Levelsonnumberlist [level - 1] == levelsoncounterlist [level - 1]) && (SonNumberlist [i] == 0)) ??????????????????????? ? {?????????????? INT K; ????????????????????? {? ????????????????????????????????????????????????????????????? {?????? ?????????????? k = Table.Entitys [i 1] [m_treecodecolumn] .value.Length / 4; ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?} ?????????????????????????????? {???????????? ???????? k = 0; ????????????????????????} ????? ?????????????????????????????????????? K = 0; ???? ??????????} ?????????????? for (int J = K; j "); ??????????????} ???????????} ????????} ???????? Return html.tostring (); ?????} /// ????? /// return to the html code of the menu item ????? /// ????? /// ????? /// ????? /// ????? /// ????? /// ????? /// ????? /// ????? /// ????? /// ????? /// ????? private string getmenuitem (Wim.Data.Antity Item, String Linestyle, String Leafstyle, Int Level, Bool Selected, String Valcolumn, String TxtColumn, String Codecolumn, String Imageurl) ????? { ???????? StringBuilder InputML = New StringBuilder (); ???????? INPUTHTML.APPEND (" ???????? INPUTHTML.APpend (item [valcolumn] .value); ???????? INPUTHTML.APpend ("/" treecode = / "); ???????? INPUTHTML.APpend (item [codecolumn] .value); ???????? INPUTHTML.APpend ("/" οnclick = / ""); ???????? INPUTHTML.APpend ("SelectItem (this) /"); ???????? f (selected) ???????? { ??????????? INPUTHTML.APpend ("Checked>"); ????????} ???????? ELSE ???????? { ??????????? INPUTHTML.APPpend (">"); ????????} ???????? INPUTHTML = new system.text.stringbuilder (); ???????? Stringbuilder html = new stringbuilder (); ???????? HTML.APpend (" ???????? // display cable and blank ???????? for (int i = 1; i ???????? Switch (Leafstyle) ???????? {??????????? case "4": ??????????? case " 5 ": ?????????????? HTML.Append (" ???????? ing ((Leafstyle! = "4") && (Leafstyle! = "41") && (Leafstyle! = "5") && (Leafstyle! = "51")) ???? ???? {??????????? IF ((LeafStyle! = "21") && (Leafstyle! = "31")) ??????????? {?? ???????????? // leaf node ?????????????? html.append (" "); "); ????????????} ??????????????? {??????????? ??? html.append (" "); ???????????} ????????} ?????????????? HTML.Append (item [codecolumn] .value); ?????????????? HTML.APpend ("style = /" Display : '' / "οnclick = /" javaScript: ClickItem (this, document.all.imgc "); ?????????????? HTML.Append (item [codecolumn] .value);? ????????????? HTML.Append (", Document.all.l"); ?????????????? HTML.Append (item [CodeColumn]. Value); ?????????????? HTML.APpend (") /"> ?????????????? HTML.Append (LeafStyle);??? ??????????? HTML.Append (". gif /"> ?????????????? HTML.APpend (item [codecolumn] .value);??? ??????????? HTML.Append ("style = /" display: 'none' / "οnclick = /" javascript: clickitem (this, document.all.imgo "); ????? ????????? HTML.Append (item [codecolumn] .value); ?????????????? HTML.Append (", Document.all.l");? ????????????? HTML.Append (item [codecolumn] .value); ?????????????? HTML.APpend (") /"> ?? ???????????? HTML.Append (Leafstyle); ?????????????? HTML.Append ("1.gif /");??? ??????????? breaf; ??????????? case "41": ??????????? Case "51": ????? ????????? HTML.APpend (" ?????????????? HTML.Append (item [codecolumn] .value); ?????????????? HTML.APpend ("style = /" Display : 'None' / "οnclick = /" javascript: clickitem (this, document.all.imgc "); ?????????????? HTML.Append (item [codecolumn] .value); ?????????????? HTML.Append (", Document.all.l"); ??????????????? HTML.Append (item [codecolumn] .Value); ?????????????? HTML.APpend (") /"> ?????????????? HTML.Append (Leafstyle.Substring (0 1)); ?????????????? HTML.Append (". Gif /"> ?????????????? HTML.Append (item [CodeColumn ] .Value); ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????. IMGO "); ?????????????? HTML.Append (item [codecolumn] .value); ?????????????? HTML.Append (", Document.all.l "); ?????????????? HTML.APpend (item [codecolumn] .value); ?????????????? HTML. Append (") /"> ?????????????? HTML.Append (LeafStyle); ?????????????? HTML.APpend (". GIF / ">"); ?????????????????????????????????????? case " 31 ": ?????????????? HTML.APpend (" ????????????? HTML.Append (Leafstyle.Substring (0, 1)); ?????????? ???? html.append (". gif /">); ??????????????????? DEFAULT: ???? ?????????? HTML.APpend (" ?????????????? html.append (leafstyle); ?????????????? HTML.APpend (". GIF /"> ");?? ???????????? breaf; ????????} "); ????????????????? Insert checkbox ?????????????? HTML.Append (InputHtml); ???????? ?????? html.append ("?????????????? HTML.APpend (item [valcolumn] .value); ????????????? HTML.Append ("','" item [txtColumn] .value ");"); ?????????????? HTML.Append (ID "_SETHIGHLIGHT (THIS) / ">"); ?????????????? HTML.APpend (item [txtcolumn] .value); ?????????????? HTML.Append ( "" "); ???????????} ??????????????? {?????????? ????? // does not have a parent node ?????????????? HTML.Append ("); ?????????????? // Insert Checkbox ?????????????? HTML.Append (Inputhtml); ?????????????? HTML.Append (");??? ??????????? html.append (item [txtcolumn] .value); ?????????????? HTML.APpend (""); ???? ??????} ????????} ?????????????????????? / parent node? ?????????? HTML.APpend (" "); ??????????? // plug box ?????????????????????????????????? HTML.Append ("??????????? HTML.Append (item [valcolumn] .value); ??????????? HTML.Append (" ',' " item [txtColumn] .Value "');"); ??????????? HTML.Append (ID "_SETHIGHLIGHT (this) /"> "); ??????????? HTML .Append (item [txtcolumn] .value); ??????????? HTML.Append ("); ????????} ???????? HTML.APpend (" "); ???????? Return html.tostring (); ?????} ????? /// ????? /// recalculate the number of parent points ????? /// ????? /// ????? /// ????? /// ????? private int [] recalculateparentNumber (Wim.Data.EntityTable Table, String CodeColumn) ????? { ???????? int [] sonnumberlist = new int [table.entitys.count]; ???????? int [] levelparentlist = new int [50]; ???????? for (INT i = 0; i ????????? {??????????? levelparentList [i] = 0; ????????} ???????? for (int i = 0; i ????? #endregion ?
