c# - Showing a particular value in combobox -


it looks simple problem i'm stuck - here problem:

i have combobox cmbconstriant 

if (!string.isnullorempty(m_link.constraintlayerlinktype)) {     bindinglist<myconstraintobj> allconstraints = getallconstraintlinks(m_project.networklayers);     cmbconstriant.datasource = allconstraints;     cmbconstriant.displaymember = "value";     cmbconstriant.selectedtext=m_link.constraintlayerlinktype;   } else {     bindinglist<myconstraintobj> allconstraints = getallconstraintlinks(m_project.networklayers);     cmbconstriant.datasource = allconstraints;     cmbconstriant.displaymember = "value"; }

the values binding when m_link.constraintlayerlinktype empty.

when has string should show value , other values should there in drop down. m_link.constraintlayerlinktype user selected value dropdown.

it showing same result both case

try

cmbconstriant.selectedindex = cmbconstriant.items.indexof(m_link.contraintlayerlinktype);

edit:

i see you're adding items of class myconstraintobj combo. in myconstraintobj class add -

public override bool equals(object obj) {     string scomparestring = obj string;     if (scomparestring == null) return false;     return constraintlayerlinktype == scomparestring; }

indexof function compares item you're passing (string) every other item in combobox, since of type myconstraintobj, comparing them incorrectly, function force comparison of variable constraintlayerlinktype string value pass.


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