C# Adding images to a list -

i'm trying add images used imagelist named "images1". i'm not in coding programs know rest of program working except fact "images1" not exist 2 last voids. searched resolve problem have difficulty find answer specific case.

how can make image list "images1" available private voids?

this code:

using system; using system.collections.generic; using system.componentmodel; using system.data; using system.drawing; using system.linq; using system.text; using system.threading.tasks; using system.windows.forms; using system.collections; using system.globalization; using system.resources; using system.reflection;  namespace booster_pack_2 {     public partial class form3 : form     {         public form3()         {             initializecomponent();         }          private void textbox1_textchanged(object sender, eventargs e)         {             list<image> images1 = new list<image>();             resourcemanager rm = booster_pack_2.properties.resources.resourcemanager;            string index1 = textbox1.text;             bitmap image1 = (bitmap)rm.getobject(index1);             picturebox1.image = image1;             images1.add((image)booster_pack_2.properties.resources.resourcemanager.getobject(index1));         }         private void textbox2_textchanged(object sender, eventargs e)         {             resourcemanager rm = booster_pack_2.properties.resources.resourcemanager;             string index2 = textbox2.text;             bitmap image2 = (bitmap)rm.getobject(index2);             picturebox2.image = image2;             images1.add((image)booster_pack_2.properties.resources.resourcemanager.getobject(index2));         }         private void textbox3_textchanged(object sender, eventargs e)         {             resourcemanager rm = booster_pack_2.properties.resources.resourcemanager;             string index3 = textbox3.text;             bitmap image3 = (bitmap)rm.getobject(index3);             picturebox3.image = image3;             images1.add((image)booster_pack_2.properties.resources.resourcemanager.getobject(index3));         }    } } 

put in proper scope. if need access in event handlers, make class member:

namespace booster_pack_2 { public partial class form3 : form {     list<image> images1;     public form3()     {         initializecomponent();     }      private void textbox1_textchanged(object sender, eventargs e)     {         images1 = new list<image>();         resourcemanager rm = booster_pack_2.properties.resources.resourcemanager;        string index1 = textbox1.text;         bitmap image1 = (bitmap)rm.getobject(index1);         picturebox1.image = image1;         images1.add((image)booster_pack_2.properties.resources.resourcemanager.getobject(index1));     }     private void textbox2_textchanged(object sender, eventargs e)     {         resourcemanager rm = booster_pack_2.properties.resources.resourcemanager;         string index2 = textbox2.text;         bitmap image2 = (bitmap)rm.getobject(index2);         picturebox2.image = image2;         images1.add((image)booster_pack_2.properties.resources.resourcemanager.getobject(index2));     }     private void textbox3_textchanged(object sender, eventargs e)     {         resourcemanager rm = booster_pack_2.properties.resources.resourcemanager;         string index3 = textbox3.text;         bitmap image3 = (bitmap)rm.getobject(index3);         picturebox3.image = image3;         images1.add((image)booster_pack_2.properties.resources.resourcemanager.getobject(index3));     } 

} }

i'd advise moving line: images1 = new list(); constructor instead, in case textbox1 isn't edited first.