A simple ToList() on your result var should work. Edit: As explained in comments below my answer, the reason for the error is that the data source should implement ICollection. IEnumerable does not, when you do ToList() it converts it into a list which implements ICollection.
Use whichever suits your need. GridView.count(…) GridView.count( crossAxisCount: 2, children: <Widget>[ FlutterLogo(), FlutterLogo(), FlutterLogo(), FlutterLogo(), ], ) GridView.builder(…) GridView.builder( gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 2), itemBuilder: (_, index) => FlutterLogo(), itemCount: 4, ) GridView(…) GridView( gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 2), children: <Widget>[ FlutterLogo(), FlutterLogo(), FlutterLogo(), FlutterLogo(), ], ) GridView.custom(…) GridView.custom( gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 2), childrenDelegate: SliverChildListDelegate( [ FlutterLogo(), FlutterLogo(), FlutterLogo(), FlutterLogo(), … Read more
Solution: Ok sorry if it is a late reply but I stumbled upon the same issue (only that I was using ListView instead) and with a bit of trial and error I found the solution to this: Basically the problem lies in the fact that the GridView/ListView child automatically requests parent focus (ScrollView) when you … Read more
Oh boy, yeah, you’re gonna have trouble with this one. It drives me nuts that ListViews and GridViews can’t be expanded to wrap their children, because we all know that they have more beneficial features in addition to their scrolling and the recycling of their children. Nonetheless, you can hack around this or create your … Read more
Looking at the GridView source, it is clear that setting the padding and the height on your ImageView will not help you at all. When a column width is not specified, it just chooses a preset number of columns (2): private void determineColumns(int availableSpace) { … if (mRequestedNumColumns == AUTO_FIT) { if (requestedColumnWidth > 0) … Read more
Use android:listSelector=”#00000000″ in your GridView element in your XML layout file.
I use this code for VB: <asp:TemplateField HeaderText=”Active” SortExpression=”Active”> <ItemTemplate><%#IIf(Boolean.Parse(Eval(“Active”).ToString()), “Yes”, “No”)%></ItemTemplate> </asp:TemplateField> And this should work for C# (untested): <asp:TemplateField HeaderText=”Active” SortExpression=”Active”> <ItemTemplate><%# (Boolean.Parse(Eval(“Active”).ToString())) ? “Yes” : “No” %></ItemTemplate> </asp:TemplateField>
There are definitely benefits to a GridView beside the inherent scrolling. For example, a consistent, dynamic layout of cells that will expand and contract based on the data you pass into it. So, when people say it’s not good to desire such a functionality, I think that’s wrong because you could want the dynamic grid … Read more
The problem with Session and Viewstate is that you also have to keep track of the gridview control for which SortColumn and Direction is stored if there is more than one gridview on the page. An alternative to Session and Viewstate is to add 2 attributes to the Gridview and keep track of Column and … Read more
There is a simpler solution when GridView columns are stretched. Just override the onMeasure of the GridView item layout with… @Override public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, widthMeasureSpec); }