Scrolling two grids

[Dan]

I have two RadGrids on the same page.  They have the same list of people in both grids, just with different information in each.  When I scroll one grid, I want to make sure that I scroll the other one to the same person.  They are the same height.  I have implemented two scroll events in the form's OnLoad:
 
this.gv1.GridElement.VScrollBar.Scroll += new ScrollEventHandler(gv1_VScrollBar_Scroll);
this.gv2.GridElement.VScrollBar.Scroll += new ScrollEventHandler(gv2_VScrollBar_Scroll);

And then I have:

void gv1_VScrollBar_Scroll(object sender, ScrollEventArgs e)

 

{

    gv2.GridElement.VScrollBar.Value = e.NewValue;

}
 

 

void gv2_VScrollBar_Scroll(object sender, ScrollEventArgs e)

{

    gv1.GridElement.VScrollBar.Value = e.NewValue;

}

 

Here's the problem.  It works for gv1.  The event never even fires for gv2.  If I comment out the functioning one, the other still doesn't work.  Off the top of my head, the only difference I can come up with is that gv2 is heirarchical.  Any thoughts?
Thanks,
Dan

[Alexander]

Hi Dan,

Thank you for contacting us.

The issue cannot be reproduced in a simple scenario with two RadGridViews, one of them hierarchical.

Consider the code snippet:
 

public class Data
{
    public int ID { get; set; }
    public string Info { get; set; }
}

public class DataRelation
{
    public int ID { get; set; }
    public string Info { get; set; }
}

private void BindGrids()
{
    // fill application data
    List<Data> data1 = new List<Data>();
    List<Data> data2 = new List<Data>();
    List<DataRelation> dataRelation = new List<DataRelation>();

    FillData(data1);
    FillData(data2);
    FillDataRelation();

    // bind the first grid
    radGridView1.DataSource = data1;

    // bind the hierarchical grid
    radGridView2.DataSource = data2;

    GridViewTemplate template = new GridViewTemplate();
    template.DataSource = dataRelation;
    radGridView2.MasterGridViewTemplate.ChildGridViewTemplates.Add(template);

    GridViewRelation relation = new GridViewRelation(radGridView2.MasterGridViewTemplate);
    relation.ChildTemplate = template;
    relation.RelationName = "Relation";
    relation.ParentColumnNames.Add("ID");
    relation.ChildColumnNames.Add("ID");
    radGridView2.Relations.Add(relation);

    // handlers
    radGridView1.GridElement.VScrollBar.Scroll += new ScrollEventHandler(radGridView1_VScrollBar_Scroll);
    radGridView2.GridElement.VScrollBar.Scroll += new ScrollEventHandler(radGridView2_VScrollBar_Scroll);
}

private void radGridView1_VScrollBar_Scroll(object sender, ScrollEventArgs e)
{
    radGridView2.GridElement.VScrollBar.Value = e.NewValue;
}

private void radGridView2_VScrollBar_Scroll(object sender, ScrollEventArgs e)
{
    radGridView1.GridElement.VScrollBar.Value = e.NewValue;
}

The above scenario works fine. Please provide us with more details for your case or send us a project demonstrating the issue. It will help us define the problem. I am looking forward for your reply.

Regards,
Alexander
the Telerik team

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

[Dan]

Hi Alexander,
Thank you so much for looking into this.  I made a few small projects today and untill just now could only verify what you said.  It works fine.  So back to the original project.  I copied the grid with the non-firing event, pasted it back onto the very same form, attached a scroll event, and it worked fine.
Then I began moving lines of code over to the new grid.  A difference that I didn't even think to mention was that the problematic grid also had a column group view definition applied.  When I changed that line of code to the new grid, the new grid quit working.

First off, my apologies if that is a known issue and my not mentioning it cost you time.

Secondly, here is my code.  Have I done it wrong?

private void SetUpColumnGroups()
{

ColumnGroupsViewDefinition colGroups = new ColumnGroupsViewDefinition();
colGroups.ColumnGroups.Add(new GridViewColumnGroup());
colGroups.ColumnGroups.Add(new GridViewColumnGroup("Month"));
colGroups.ColumnGroups[0].Rows.Add(new GridViewColumnGroupRow());
colGroups.ColumnGroups[1].Rows.Add(new GridViewColumnGroupRow());
colGroups.ColumnGroups[0].Rows[0].Columns.Add(gv1.Columns["Name"]); colGroups.ColumnGroups[0].Rows[0].Columns.Add(gv1.Columns["Room"]);
colGroups.ColumnGroups[0].Rows[0].Columns.Add(gv1.Columns["Area"]);
colGroups.ColumnGroups[0].Rows[0].Columns.Add(gv1.Columns["WValue"]);

for (int i = 1; i <= 5; i++)
{
colGroups.ColumnGroups[1].Rows[0].Columns.Add(gv1.Columns[string.Format("Week{0}Date", i.ToString())]);
colGroups.ColumnGroups[1].Rows[0].Columns.Add(gv1.Columns[string.Format("Week{0}Code1", i.ToString())]);
colGroups.ColumnGroups[1].Rows[0].Columns.Add(gv1.Columns[string.Format("Week{0}Code2", i.ToString())]);
colGroups.ColumnGroups[1].Rows[0].Columns.Add(gv1.Columns[string.Format("Week{0}Value", i.ToString())]);
}

gv1.ViewDefinition = colGroups;  //When I comment out this line, scolling works
gv1.MasterGridViewTemplate.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
}

Thank you for your time,
Dan

 

 

 

 

 

 

[Alexander]

Hello Dan,

I am sorry but we still cannot reproduce the bug using your SetUpColumnGroups() method and populating the RadGridView with sample data.

It would be best if you can reproduce the issue in a simple project. If not, please send us your project in a new support ticket so we can debug it and find the issue. I am waiting for your response.
 

Regards,
Alexander
the Telerik team

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

[Praveena]

Hi Alexander,

           I also faced the same type of issue. And resolved it very easily with the help of your post. Thanks a lot!! It is really helpful and saved my time.

Regards,
Praveena

[Avinash]

hi Telerik team,

I am using Telerik winforms 2010 Q3 RadGridView Control.
I am having issue in implementing Vertical scrolling when i use

ColumnGroupsViewDefinition as ViewDefinition.
I tried on the forums also but couldn't find any suitable solution.

My code is:
ColumnGroupsViewDefinition view = new ColumnGroupsViewDefinition();         
    view.ColumnGroups.Add(new GridViewColumnGroup("")); 
    view.ColumnGroups.Add(new GridViewColumnGroup("Target Category"));   
    view.ColumnGroups.Add(new GridViewColumnGroup("Source Category"));
    view.ColumnGroups[0].Rows.Add(new GridViewColumnGroupRow());  
    view.ColumnGroups[0].Rows[0].Columns.Add(radGridView.Columns["Column1"]);
    view.ColumnGroups[1].Rows.Add(new GridViewColumnGroupRow());
    view.ColumnGroups[1].Rows[0].Columns.Add(radGridView.Columns["Column11"]);
    view.ColumnGroups[1].Rows[0].Columns.Add(radGridView.Columns["column12]); 
    view.ColumnGroups[2].Rows.Add(new GridViewColumnGroupRow()); 
    view.ColumnGroups[2].Rows[0].Columns.Add(radGridView.Columns["column21"]); 
    view.ColumnGroups[2].Rows[0].Columns.Add(radGridView.Columns["column22"]); 
    this.radGridView.ViewDefinition = view;





When I use ViewDefinition I am not able to get vertical scrolling for the view.



Please let me know how can I achieve this.

Waiting for your reply.

thanks,

Avinash

[Svett]

Hello Avinash,

I am not able to assist you efficiently with the supplied information. I would kindly ask you to open a support ticket where you can attach a sample project that demonstrates your scenario in depth, so we can investigate it and provide you with adequate support.

Greetings,
Svett
the Telerik team