c# - Hiding tab headers in tabControl in winforms -


i'm trying hide tab headers in tabcontrol, it's shown here in this link, getting error in designer's code. once change both lines, this:

severity code description project file line message designer cannot process unknown name 'selectedindex' @ line 43. code within method 'initializecomponent' generated designer , should not manually modified. please remove changes , try opening designer again. c:\users\krzysztof\documents\visual studio 2015\projects\daneuzytkownika3\daneuzytkownika3\tabcontroller.designer.cs 44

severity code description project file line error cs1061 'tabcontroller' not contain definition 'selectedindex' , no extension method 'selectedindex' accepting first argument of type 'tabcontroller' found (are missing using directive or assembly reference?) daneuzytkownika3 c:\users\krzysztof\documents\visual studio 2015\projects\daneuzytkownika3\daneuzytkownika3\tabcontroller.designer.cs 43

line 43 in designer's code of form is:

this.tabcontrol1.selectedindex = 0;

could please tell me, how fix it?

tablesstabcontrol.cs

namespace hiding {     class tablesstabcontrol : form1     {         protected override void wndproc(ref message m)         {             // hide tabs trapping tcm_adjustrect message             if (m.msg == 0x1328 && !designmode)                 m.result = (intptr)1;             else                 base.wndproc(ref m);         }     } }

form1.designer.cs

namespace hiding {     partial class form1     {         /// <summary>         /// required designer variable.         /// </summary>         private system.componentmodel.icontainer components = null;          /// <summary>         /// clean resources being used.         /// </summary>         /// <param name="disposing">true if managed resources should disposed; otherwise, false.</param>         protected override void dispose(bool disposing)         {             if (disposing && (components != null))             {                 components.dispose();             }             base.dispose(disposing);         }          #region windows form designer generated code          /// <summary>         /// required method designer support - not modify         /// contents of method code editor.         /// </summary>         private void initializecomponent()         {             this.tabcontrol1 = new tablesstabcontrol();             //this.tabcontrol1 = new system.windows.forms.tabcontrol();             this.tabpage1 = new system.windows.forms.tabpage();             this.tabpage2 = new system.windows.forms.tabpage();             this.tabcontrol1.suspendlayout();             this.suspendlayout();             //              // tabcontrol1             //              this.tabcontrol1.controls.add(this.tabpage1);             this.tabcontrol1.controls.add(this.tabpage2);             this.tabcontrol1.location = new system.drawing.point(31, 12);             this.tabcontrol1.name = "tabcontrol1";             this.tabcontrol1.selectedindex = 0;//line error             this.tabcontrol1.size = new system.drawing.size(200, 100);             this.tabcontrol1.tabindex = 0;             //              // tabpage1             //              this.tabpage1.location = new system.drawing.point(4, 22);             this.tabpage1.name = "tabpage1";             this.tabpage1.padding = new system.windows.forms.padding(3);             this.tabpage1.size = new system.drawing.size(192, 74);             this.tabpage1.tabindex = 0;             this.tabpage1.text = "tabpage1";             this.tabpage1.usevisualstylebackcolor = true;             //              // tabpage2             //              this.tabpage2.location = new system.drawing.point(4, 22);             this.tabpage2.name = "tabpage2";             this.tabpage2.padding = new system.windows.forms.padding(3);             this.tabpage2.size = new system.drawing.size(192, 74);             this.tabpage2.tabindex = 1;             this.tabpage2.text = "tabpage2";             this.tabpage2.usevisualstylebackcolor = true;             //              // form1             //              this.autoscaledimensions = new system.drawing.sizef(6f, 13f);             this.autoscalemode = system.windows.forms.autoscalemode.font;             this.clientsize = new system.drawing.size(284, 261);             this.controls.add(this.tabcontrol1);             this.name = "form1";             this.text = "form1";             this.tabcontrol1.resumelayout(false);             this.resumelayout(false);          }          #endregion          private tablesstabcontrol tabcontrol1;         //private system.windows.forms.tabcontrol tabcontrol1;         private system.windows.forms.tabpage tabpage1;         private system.windows.forms.tabpage tabpage2;     } }

i have created project , implemented tab control given in example follows:

class tablesstabcontrol : tabcontrol {     protected override void wndproc(ref message m)     {         // hide tabs trapping tcm_adjustrect message         if (m.msg == 0x1328 && !designmode)             m.result = (intptr)1;         else             base.wndproc(ref m);     } }

then upon rebuilding project add new tablesstabcontrol test form using designer. within designer, can switch between tabs using visible headers.

at runtime, headers disappear intended. have 2 tabs; able select between tabs using following code:

// selects first tab: tablesstabcontrol1.selectedindex = 0;  // selects second tab: tablesstabcontrol1.selectedindex = 1;

additionally, in form1.designer.cs, have line 48 follows:

this.tablesstabcontrol1.selectedindex = 0;

which poses no difficulty me.

have tried closing documents, cleaning solution, rebuilding , reopening designer?


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