c# - Handle navigation keys in TextBox inside DataGridView -

we have datagridview data in form. enable quick search added textbox datagridview.controls , highlight cells contain text textbox.

however there issue. datagridview "swallow" left arrow, right arrow, home , end (with or without shift) keys even if cursor in textbox, , user cannot change caret position or select text keyboard.

textbox generates previewkeydown event , nothing more happens

simplified code:

public partial class testform : form {     public testform()     {         initializecomponent();          var txt = new textbox { dock = dockstyle.bottom };         var dgv = new datagridview         {             dock = dockstyle.fill,             columncount = 3,             rowcount = 5         };         dgv.controls.add(txt);                     controls.add(dgv);          dgv.previewkeydown += dgvonpreviewkeydown;         dgv.keydown += dgvonkeydown;                 txt.previewkeydown += txtonpreviewkeydown;         txt.keydown += txtonkeydown;     }     private void dgvonpreviewkeydown(object sender, previewkeydowneventargs e)     {         debug.writeline(string.format("dgv key preview {0}", e.keycode));         e.isinputkey = true;     }      private void dgvonkeydown(object sender, keyeventargs e)     {         debug.writeline(string.format("dgv key {0}", e.keycode));     }      private void txtonpreviewkeydown(object sender, previewkeydowneventargs e)     {         debug.writeline(string.format("txt key preview {0}", e.keycode));                 }      private void txtonkeydown(object sender, keyeventargs e)     {         debug.writeline(string.format("txt key {0}", e.keycode));     } } 

type 123 in textbox , try left arrow, right arrow, home or end. datagridview change selected cell textbox caret doesn't move

what can done make sure textbox receive keys , change caret position or select text?

have tried adding textbox main form instead of dgv?

controls.add(txt); controls.add(dgv);  txt.previewkeydown += dgvonpreviewkeydown; txt.keydown += dgvonkeydown;  txt.previewkeydown += txtonpreviewkeydown; txt.keydown += txtonkeydown;