I have a Problem with adding columns programmatically to a AdvancedDataGrid. The code:
var cols:Array = thisDataGrid.columns;
cols.push(dgc);
thisDataGrid.columns = cols;
does create a column, adds it to the cols array, bot the last code line has no effect. The cols wont be found in the thisDataGrid.columns property...
What could be the problem? I'm working with a test license, and on the advanceddatagrid the watermark shows up. Could this be a problem?
Thanks for help!
Markus
I had the same issue and resolved it by making sure that I add my ADG object into an active visual component. In my case, I just made a call to this.addElement( adg ) (or this.addChild() ) after updating the adg.column property.
It seems like the adg properties will only update when the adg is "attached" to an active visual component. I havn't taken the time to really look into the cause of this behaviour though.
try doing invalidateProperties() and invalidateDisplayList() on grid
Related
on edit the bit should be true and also context.clicked should also work
this is not working
Clicked="#(()=> OnEditBtn(context))"
First of all, I am not quite sure what is your problem, you could try to expand on your question.
Secondly if your problem is not showing some component after changing variable, try to call StateHasChanged() to redraw component, if your OnEditBtn function is the bound function in <Button Clicked=#..., could be the issue.
But I am just guessing with what I have to work with.
I've a linkedhashmap that I put into Properties file, and it shows the fields in the menu. I've an others color option and I want it to be seen at the end.
So colormap is my linkedhashmap and I put others the end. So when I look inside colormap, last element is Others. But changes when I put it in properties file.
My code is like this:
colormap.put("Others",Color.GRAY);
Properties prop = new Properties();
prop.putAll(colormap);
And order changes inside prop. Do you have any idea how to solve this problem?
The java.util.Properties type inherits from java.util.Hashtable and there is no guarantee that the table will retain its order even after you've loaded the properties.
to fix that you can use OrderedProperties
I have a custom <mx:DataGrid /> that is updated with data from a ColdFusion server every 60 seconds. I've noticed that every time the DataGrid updates and redraws the scroll position is reset to the top.
Is there a way I can preserve the scroll position for my DataGrid?
Thanks in advance.
I'm pretty sure you can use the verticalScrollPosition. Save it before the updated and reset it after the update. Keep in mind that if you're changing the dataProvider, the verticalScrollPosition may not be pointing at the same place in the old and new dataprovider.
Just to provide a bit more detail. The way I did this is create a variable called scrollPos then in
<mx:DataGrid id="someId" I used
scroll="scrollPos=someId.verticalScrollPosition"
Then after the dataProvider is updated I call a function:
private function setScrollPosition() : void {
someId.verticalScrollPosition = scrollPos;
}
or you can just set the variable instead of calling a function.
I've got a project I'm working on where I need to put a RadioButton inside a ListView, and have them all have the same GroupName. (can't use RadioButtonList, long story).
Anyway, this seems to be a well known bug in .NET, so I've implemented the solution found here:
ASP.NET RadioButton messing with the name (groupname)
This works perfectly, but with one small bug which undoubtedly will come back to bite me. If I click one radio button, and then click another while the javascript function is still running and has not completed; I can get 2 radiobuttons in the same group selected.
Any ideas? If you need clarification; leave me a comment and I'll update my post.
EDIT: I believe I fixed my own issue here. See my posted answer below.
Would something like this work?
if (!rbClicked)
rbClicked=True;
runJavascript();
rbClicked=False;
I admit I didn't do alot of research, but this is how I've usually solved this type of problem.
Turns out I was misguided here.
Later on in the page lifecycle; I was adding an additional onclick event that was overwriting the previous value.
In the following example:
var radiobutton = new System.Web.UI.WebControls.RadioButton();
radiobutton.Attributes.Add("onclick", "test1");
radiobutton.Attributes.Add("onclick", "test2");
the onlcick attribute is set to "test2"; test1 is lost.
I ended up fixing it by appending to the existing attribute; see below:
radiobutton.Attributes["onclick"] = string.Format("{0};{1}", radiobutton.Attributes["onclick"], "My Second Script");
This works without issue.
I once saw this feature in action but I don't know how to turn it on. The grid can show a tooltip with the current row number (or row ID) while dragging the scrollbar. This helps you to stop the scroll in the right place. I'm assuming some property will turn this on, but I can't find it.
Maybe it is also dependent on the scroll mode?
UPDATE:
In the image below you can see an example of the tooltip I'm looking for. This is displayed while the scrollbar is being dragged (up or down). The number in the tooltip is the row number (you can't see it in this image, way to the left in the grid). This is the same grid that I am using now. Just from a very old build of our product. Somehow this tooltip was turned off. And no one knows how to turn it back on :(
I'm pretty sure this is a built in feature of the ultrawebgrid. Not something that required extra coding.
alt text http://img138.imageshack.us/img138/6337/croppercapture.jpg
Right! Now that we've established that you have version 6.3, I've hopefully got a solution for you. I don't have 6.3 myself, but I've got a slightly later one that I think didn't have Virtual Scrolling added as a feature yet.
So try this code:
webgrid.DisplayLayout.XmlLoadOnDemandType = XmlLoadOnDemandType.Virtual;
This should automatically put a tooltip on the grid as you scroll down. Have a look here for a running sample... (and remember to choose the virtual option)
Here's hoping!
Rob G
I don't know if there's a UltraWebGrid property to simply turn on the behavior you're looking for. I almost suspect you experienced this feature in another application, perhaps not even a web based one (sorry!). I do however, know exactly what you're talking about.
As a work-around, I would suggest allowing the user to input the destination row number, and to simply "jump" to it, using this technique.
If that doesn't satisfy you, it may be possible to achieve this behavior with JavaScript. You would need to use something like this technique to get the information you need, estimate (or actually detect, if possible) the row number, and the rest is up to the GUI. I would go with the work-around described above though :)
I'm typing this from memory here as I don't have it installed on this machine and I haven't seen that setting before, but how about adding something like this to the InitializeRow event:
foreach (UltraGridCell cell in e.Row.Cells)
{
if(cell.Column.Key == "Topic") //from your grid above
cell.Title = cell.Row.Index;
}
The row object itself does not have a "Title" property from memory, but the cell does.
See if that works...
Regards,
Rob G
OK - I think I've found your illusive setting:
You can set the TipStyleScroll on the Override to Show on the Grid (this may be version dependant).
You can determine which field is displayed as the tooltip by using the ScrollTipField property of the band.
I did it like so:
myGrid.DisplayLayout.Override.TipStyleScroll = TipStyle.Show;
myTopBand.ScrollTipField = "Id";
...and it works like a charm!
If it's a really long list, sometimes setting the ScrollStyle to Deferred helps:
myGrid.DisplayLayout.ScrollStyle = ScrollStyle.Deferred;
Hope that helps...
Rob G
Once again - not sure which version you have, so to be safe here's somthing you can try from 2009 version:
myGrid.Behaviors.VirtualScrolling.Enabled = true;
myGrid.Behaviors.VirtualScrolling.TooltipVisibility = DefaultableBoolean.True;
If your scrolling mode is Deferred instead of Virtual, then the tooltip is normally enabled by default.
You can find full details about this feature here
Hope that helps,
Rob G