c# 4.0 - Deselect text in a textbox -

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i have windows form sets text property in textbox of string variable. when form ran, has of text in textbox selected. need try , figure out how keep happening. tried 

deslectall()

method on textbox doesn't seem work. tried 

txtbox.selectnextcontrol(txtcostsummary, true, false, true, true);

but kind of guessing on paramters needed set to, tweaking them doesn't seem make difference. understand i'm doing i'll make little more clear on how happening.

public form1() {     apple = new apple();     a.iwantthistext = "item 1: " + 50.00 + "\r\n";     txtbox.text = a.iwantthistext; }  class apple {     private string iwantthistext;     public string iwantthistext     {     { return iwantthistext; }     set { iwantthistext += value; } // appends there before     } }

everything works fine except part has printed information in textbox text in textbox selected, isn't thought happen, nor want happen.

thanks ideas!

try this: 

txtbox.select(0, 0);

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