Resizing Column Widths On Window Resize

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Daniel Suitor posted over 16 years ago

I'm trying to resize my column widths whenever the user resizes the window. When the window size changes, I determine the new column widths then apply it to the column and label width properties:

currColField.Settings.CellMinWidth = dWidthPerCol;
currColField.Settings.CellMaxWidth = dWidthPerCol;
currColField.Settings.CellWidth = dWidthPerCol;

currColField.Settings.LabelMaxWidth = dWidthPerCol;
currColField.Settings.LabelMinWidth = dWidthPerCol;
currColField.Settings.LabelWidth = dWidthPerCol;

Problem is, the settings don't take cause the columns to resize. Am I doing something wrong? Is there a better way to approach this?

Thanks
Dan

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Offline Joe Modica posted over 16 years ago

Hi Dan -

The following code works for me (you would never want to do this but it demonstrates that you can resize cells when the containing window is resized):

protected override void OnRenderSizeChanged(SizeChangedInfo sizeInfo)

{

base.OnRenderSizeChanged(sizeInfo);

double newCellWidth = this.xamDataGrid1.DefaultFieldLayout.Fields[0].CellWidthResolved + 1;

this.xamDataGrid1.DefaultFieldLayout.Fields[0].Settings.CellMinWidth = newCellWidth;

this.xamDataGrid1.DefaultFieldLayout.Fields[0].Settings.CellMaxWidth = newCellWidth;

this.xamDataGrid1.DefaultFieldLayout.Fields[0].Settings.CellWidth = newCellWidth;

double newLabelWidth = this.xamDataGrid1.DefaultFieldLayout.Fields[0].LabelWidthResolved + 1;

this.xamDataGrid1.DefaultFieldLayout.Fields[0].Settings.LabelMaxWidth = newLabelWidth;

this.xamDataGrid1.DefaultFieldLayout.Fields[0].Settings.LabelMinWidth = newLabelWidth;

this.xamDataGrid1.DefaultFieldLayout.Fields[0].Settings.LabelWidth = newLabelWidth;

}

Joe
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Offline Daniel Suitor posted over 16 years ago in reply to Joe Modica

Joe,Thanks for the info. I tried to use the code you provided, yet I still get the same results. Perhaps it's the way I'm constructing the grid and the fields. I'm doing it dynamically at run time, not via XAML. I created a sample app using the code you provided that demonstrates what I'm seeing. How can I send you the source to this app so that you can replicate my problem?ThanksDan
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Offline Joe Modica posted over 16 years ago in reply to Daniel Suitor

Hi Dan -

When your composing your post click the 'Options' tab. On this tab there is an option to Add/Update a file attachment.

Joe
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Offline Daniel Suitor posted over 16 years ago in reply to Joe Modica

Joe,

I've attached the source to my app as a .zip file. The upload was limited to 200k, so I had to remove the obj and bin directories. You will have to rebuild before you can run it. I'm sure your references are in different locations, so you will have to update them accordingly for it to build/run. Please let me know what you find.

Thanks

Dan

GridTestApp.zip
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Offline Joe Modica posted over 16 years ago in reply to Daniel Suitor

Hi Dan -

I ran your sample and it appears to be doing exactly what you would expect the code to do as written. Basically, every time the render size changes 10 pixels is added to the size of the first column.

As I mentioned in the post where I provided the sample code, the sample code is not intended to do anything useful - i.e., you would never want to do what it is doing in an app. It was intended to demonstrate that you can change column widths in response to the form resizing.

Can you describe what you are trying to achieve by resizing the columns? BTW, if you are trying to size the columns so that they all fit exactly within the available width of the grid, you can simply set the XamDataGrid's AutoSize property.

Joe
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Offline Daniel Suitor posted over 16 years ago in reply to Joe Modica

Joe,

I guess that I misunderstood what you meant in your first reply. I thought you were saying that the grid columns could be resized based on the window being resized, but that your example did not represent a real world scenario.

I could not find an AutoSize property, did you mean AutoFit?

What I’m trying to do is have a grid that has some columns which are of a fixed width, and the other columns that occupy the remaining space. The window is resizable, therefore, the amount of remaining space changes whenever the widow is resized. Should I try to achieve this in a different manner?

Dan
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Offline Stefan posted over 11 years ago in reply to Vimal Kumar

Hello Vim,

I found this post duplicate to this one:

http://ko.infragistics.com/community/forums/p/82901/414148.aspx#414148

which is already discussed.
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Vimal Kumar posted over 11 years ago in reply to Daniel Suitor

Hi Support Team,
I have few columns in XamDataGrid which are able to resize.
I 'm trying set minimum width for each column to prevent from minimizing the entire column.

Thanks in advance!

Vim
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Offline Daniel Suitor posted over 16 years ago in reply to Joe Modica

Joe,I was running against 7.2, but the Beta version. I've since upgraded to the Release version. It took a bit for me to complete this task, hence the reason for my delayed response. This appears to have taken care of it. Thanks for your help on this.Dan
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Offline Joe Modica posted over 16 years ago in reply to Daniel Suitor

Hi Dan -

When I run your sample app here, the 'Field 1' resizes properly! Are you using the latest 7.2 hotfix version of the controls?

Joe
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Offline Daniel Suitor posted over 16 years ago in reply to Daniel Suitor

Attached is the grid test app.

GridTestApp.zip
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