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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 21%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EIR%3C/text%3E%3C/svg%3E)
We are trying use ActiveX component grid control in asp.net server side code(hidden grid).
From asp.net code we are instantiating a class (from class library - dll reference) , in which a windows form is loaded from a thread (ApartmentState set to ApartmentState.STA)
We are getting following error while reading ActiveX control '.rows' property:
Property get of 'Rows' cannot be invoked at this time. Exception of type 'System.Windows.Forms.AxHost+InvalidActiveXStateException' was thrown.
'.name' property was returning proper value.
Same error is thrown to dynamic grid also, outside windows form.
Dim a As New grid1
a.CreateControl()
a.Rows = 5
Also, same code is working from the IDE(localhost) without error.
Is there any setting, to be done in asp.net project ?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(262.40000000000003, 46%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAK%3C/text%3E%3C/svg%3E)
I would try and bit the bullet here, and re-build using listview (or grid view - but lv is unlimited in terms of flexibility). Now, no question you given this thought, and want to save lots of time.
But, I would not try and put that round peg in a square hole so to speak.
And nice laid out grids with lots of features and good looking can take a LOT of work (I get your goal here).
But, I think over time, the efforts are/will be worth it to re-build the grid with a non ActiveX control - I really do think that is the best road. (but will take work!).
I feel bad, since i don't have better advice then a re-build of the grid using a native asp.net control.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(211.20000000000002, 61%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBS%3C/text%3E%3C/svg%3E)
When run with the ide, there is an active window for the control (the one running the ide). When run with iis, which is a service, there is no window, and window controls will not work.
solved after registering latest OCX in webserver