combobox

[ngpollarolo]

Is it possible to get an example of creation and use of a combobox with items type keyvaluepair in a winform in x#?

[wriedmann]

Hi Giorgio,
if you are using an object as element to fill a ComboBox in Windows Forms, the following code should work:

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self:PassSys:DisplayMember	:= "Value"
self:PassSys:ValueMember	:= "Key"
self:PassSys:DataSource	:= oDict
self:PassSys:SelectedValue	:= oItem:PassSys

where "PassSys" is the ComboBox, "oDict" the dictionary and "oItem" the current dataitem (or model, in case you are thinking in MVVM).
This is standard Windows Forms behavior.
Wolfgang

[ngpollarolo]

Thank Wolfgang,

my problem is to translate from c# to x# the following code:

comboBox1.Items.Add(new KeyValuePair<string, int>("Opción 1", 1));
comboBox1.Items.Add(new KeyValuePair<string, int>("Opción 2", 2));
comboBox1.Items.Add(new KeyValuePair<string, int>("Opción 3", 3));

getting values from the array:

aTab:={}
aadd(aTab,{"giorgio",123})
aadd(aTab,{"Jose",234})

TIA

Giorgio

[wriedmann]

Hi Giorgio,
please forget the comboBox1.Items.Add syntax.

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using System.Collections.Generic

local oValues as List<KeyValuePair<int,string>>

oValues := List<KeyValuePair<int,string>>{}
oValues:Add( 123, "giorgio" )
oValues:Add( 234 "jose" )
comboBox1:DisplayMember := "value"
comboBox1:ValueMember := "key"
comboBox1:DataSource := oValues

You can use every object to fill your combobox, just fill the correct values to the DisplayMember and ValueMember properties.

Wolfgang

[Chris]

Giorgio,

my problem is to translate from c# to x# the following code:

comboBox1.Items.Add(new KeyValuePair<string, int>("Opción 1", 1));

I agree with Wolfgang, his suggested way to do it is much more elegant. But just for completeness, the direct translation of your c# code to X# is this:

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comboBox1:Items:Add(KeyValuePair<STRING, INT>{"Opción 1", 1})