c# - Listbox isn't populating with Data -

-

i have set listbox called lboxsupplier, have created data adapter used populate supplier listbox. when run form listbox empty. want listbox populate supplier id , company click on populate listbox products.

namespace pennyburn_greg { public partial class formprocess : form {     sqldataadapter dasupplier;     dataset dspennyburngreg = new dataset();     sqlconnection conn;     sqlcommand cmdsupplierdetails;     sqlcommandbuilder cmdbsupplier;     datarow drsupplier;     string connstr, sqlsupplier;      public formprocess()     {         initializecomponent();     }    private void formprocess_load(object sender, eventargs e) {     connstr = @"data source= arlene-pc; initial catalog= pennyburngreg; integrated security=true";      //dataadapter supplier listbox          sqlsupplier = @"select* supplier";         conn = new sqlconnection(connstr);         cmdsupplierdetails = new sqlcommand(sqlsupplier, conn);         dasupplier = new sqldataadapter(cmdsupplierdetails);         dasupplier.fillschema(dspennyburngreg, schematype.source, "supplier"); }     private void filllboxsupplier(string str)     {         dasupplier.fill(dspennyburngreg, "supplier");         lboxsupplier.datasource = dspennyburngreg.tables["supplier"];         lboxsupplier.displaymember = "company";         lboxsupplier.valuemember = "supplierid";       }      } }

first of all, why calling fillschema, rather should calling fill method data, like

dasupplier.fill(dspennyburngreg, "supplier");

once have dataset filled, in formprocess_load() can add dataset datasource listbox like

lboxsupplier.datasource = dspennyburngreg.tables["supplier"]

Comments

Post a Comment

Popular posts from this blog

python - TypeError: start must be a integer -

-
i trying draw 5 turtles, getting typeerror on line 25. here code: import turtle wn = turtle.screen() redrose = turtle.turtle() color = input("what background color be?") fillcolor_f = input("what color of rose be?") redrose.hideturtle() redrose.speed(30) redrose.penup() redrose.left(180) redrose.forward(175) redrose.right(90) redrose.forward(30) redrose.right(90) redrose.pendown() def drawrose(red): redrose.color("pink") redrose.fillcolor(fillcolor_f) redrose.fill(true) in range(red): redrose.forward(i) redrose.right(49) in range(5): drawrose(redrose) redrose.penup() redrose.forward(350) redrose.right(144) redrose.pendown() redrose.fill(false) drawrose(50) wn.bgcolor(color) i trying draw 5 roses, produces errors. doing in interactivepython.org. you recursively calling drawrose wrong parameter. on line 23 ( for in range(red): ) expect red integer...
Read more

c# - DevExpress RepositoryItemComboBox BackColor property ignored -

-
i have following code almost works properly; private void cbstatus_drawitem(object sender, listboxdrawitemeventargs e) { string item = e.item string; if (item != null) { switch (item) { case "1": e.appearance.forecolor = color.green; e.appearance.backcolor = color.green; break; case "2": e.appearance.forecolor = color.orange; e.appearance.backcolor = color.orange; break; case "3": e.appearance.forecolor = color.red; e.appearance.backcolor = color.red; break; } } } when dropdown shown, items forecolor correct, backcolor remains whatever backcolor of theme is; i.e. if i've got set dark theme, backcolor dark, cells in gridview, rather being green/orange/red. i've tried setting e.appearance.options.usebackcolor trying set e....
Read more

django - Creating multiple model instances in DRF3 -

-
1) create multiple model instances 1 api call, asked here: how create multiple model instances django rest framework? tried solution named in link, no success. i trying upload multiple files in 1 api call. result: files uploaded (only once overwrote perform_create) 1 instance created (if send 2 files, latter created instance). my code: class fileuploadserializer(serializers.modelserializer): def __init__(self, *args, **kwargs): many = kwargs.pop('many', true) super(fileuploadserializer, self).__init__(many=many, *args, **kwargs) class meta: model = fileupload read_only_fields = ('created', 'datafile', 'owner') class fileuploadviewset(viewsets.modelviewset): queryset = fileupload.objects.all() serializer_class = fileuploadserializer parser_classes = (multipartparser, formparser, ) def perform_create(self, serializer): file_list = self.request.data.getlist('file') ...
Read more