Data Binding and reading of the listview Control

ListviewControls can directly view data information, making operations easier. This articleArticleWill tell youC #InListviewData Binding controlsListviewA novice friend of the control is helpful.

In Listview Add a header

 

Add a header to the control edit Column

 //  Header style Listview1.gridlines = True ; Listview1.fullrowselect = True  ; Listview1.view = View. Details; listview1.scrollable = False  ; Listview1.multiselect = False  ; Listview1.headerstyle = Columnheaderstyle. clickable;  //  Method 1  //  Declare title and create object Columnheader CH = New  Columnheader ();  //  Title Ch. Text = "  Countries participating in the Olympic Games  "  ;  //  Column width. The default value is 60. Ch. width = 60  ;  //  Display text alignment Ch. textalign = horizontalalignment. Center;

//  Add title to listview      This  . Listview1.columns. Add (CH );  // Follow-up  Columnheader againch...  //  Method 2
 Listview1.columns. Add ( "  ID  " , 50  , Horizontalalignment. center );
Listview1.columns. Add (  "  Country " , 50 , Horizontalalignment. center );
Listview1.columns. Add ( "  Gold Medal  " , 50  , Horizontalalignment. center); listview1.columns. Add (  "  Silver Medal  " , 50  , Horizontalalignment. center); listview1.columns. Add (  "  Bronze Medal " , 60 , Horizontalalignment. center );

Listview Control Data Binding

UseForeachTraversalDTOrDSAnd then bindIstview.

 Private   Void  Binddatatolistview (){  // Clear old data              This  . Listview1.items. Clear (); dataset DS = Data (database) //  Determine if DS has data              If (Ds! = Null & Ds. Tables. Count> 0 & Ds. Tables [ 0 ]. Rows. Count> 0  ){  Foreach (Datarow Dr In DS. Tables [ 0  ]. Rows ){  Int Sor = convert. toint32 (Dr [ "  ID  "  ]. Tostring ());  String Strnation = Dr [ "  Nation  "  ]. Tostring ();  String Strgoldmedal = Dr [ " Goldmedal  "  ]. Tostring ();  String Strsilvermedal = Dr [ "  Silvermedal  "  ]. Tostring ();  String Strbronzemedal = Dr [ "  Bronzemedal  "  ]. Tostring (); listviewitem ivitem = New Listviewitem ();  //  ID Ivitem. Text = Sor. tostring (); ivitem. Tag = Dr;  //  Country  Ivitem. subitems. Add (strnation. tostring ());  //  Gold Medal  Ivitem. subitems. Add (strgoldmedal. tostring ());  // Silver Medal  Ivitem. subitems. Add (strsilvermedal. tostring ());  //  Bronze Medal  Ivitem. subitems. Add (strbronzemedal. tostring ());  This  . Listview1.items. Add (ivitem );}}} 

Obtain the current click.ListviewThe row data is displayed as follows:

 Private   Void Listviewmediaclick (Object  Sender, eventargs e ){  If (Listview1.items. Count <= 0 ) Return  ;  If (Listview1.selecteditems. Count <= 0 ) Return  ;  Int Index = This . Listview1.selecteditems [ 0 ]. Index;  If (Index < 0 ) Return  ; Datarow Dr = (Datarow )( This  . Listview1.items [Index]. Tag); MessageBox. Show (Dr [  " Nation " ]. Tostring () + Dr [ "Goldmedal"  ]. Tostring ());
MessageBox. Show (  This . Listview1.selecteditems [ 0 ]. Subitems [ 1  ]. Text. tostring ());

  //  Method 2  
MessageBox. Show (listview1.selecteditems [ 0 ]. Subitems [ 0  ]. Text );
MessageBox. Show (listview1.selecteditems [  0 ]. Subitems [ 1  ]. Text );
MessageBox. Show (listview1.selecteditems [  0 ]. Subitems [ 2  ]. Text );

  // Listviewitem IV = new listviewitem (Ds. Tables [0]. Rows [1] [1]. tostring ());

  //  Iv. Tag = Ds. Tables [0]. Rows [1] [1]. tostring ();   ///  /Read hidden Columns  

 //  This. listview1.selecteditems [0]. Tag. tostring ();    
} 

Hide Columns

There is a solution in the second method above to read hidden columns.

In the second method, Lv = new listviewitem (Ds. Tables [0]. Rows [I] [1]. tostring (); MeansListviewThe first row of data information in,

LV. Tag = Ds. Tables [0]. Rows [I] [0]. tostring (); // represents a hidden column.

When reading hidden columns, you can use the followingCodeTo obtain the value of a hidden column.

 
//This. listview1.selecteditems [0]. Tag. tostring ();