Hi all,

a simple question about collapsible panel: how is it possible to have a collapsible panel inside a form which is by expand leads to the form resizing and by collapsing will restore the original size?
This should be like a "classic" "Advanced information" UI element - like copy operation in explored in W10 "More / Less details".

Thanks in advance

Rostislaw

I cannot believe I couldn't find a question about this anywhere... Which usually means I'm missing something extremely simple. I have a RadGridView and I add a column via the following code:

I really like the conditional formatting option available in the prebuilt form that the RadGridView offers. However, if I want to put a condition on the GridViewComboBoxColumn I added, the condition is based on the ValueMember. This makes no sense to the user, because the value member is just a key from the database, so the end user would never have any idea what the value member is. There has to be an easy way to base the condition on the text selected in the RadViewComoBoxColumn instead of the value of the cell.

 Any advice would be GREATLY appreciated.

Hello,

I have changed the minimum height of the ThumbElement (RadListView.ListViewElement.ViewElement.VScrollBar.ThumbElement.MinSize = New Size(0, 35)) because the button gets too small for me (height) when there are 1000+ items in the box.

This setting of the minimum size works perfectly, but there is one problem:

When scrolling down the slider-button (ThumbElement) all the calculation for the position is done on the "original" size with the result that the slider-button will be drawn over the "down" button. (see attached)

Has anyone a solution to solve this?

Grtz Patrick

Hi all,

my windows from looks very different in W7 and W10. This is a sizable tool window, and I use an anchoring for controls there. Is there a way to get the form look and feel more similar in w7 and w10?

Thx

Rostislaw

ps: my problem is a position of the ok button (on the upper boundary in w10 nad "normal" in w7) and the distance between the text (label) and apply button

I'm usingTelerik.WindControls.UI.RadDropDownButtonElement control for Winforms. When the control renders in a RadRibbonBar I would like to see the button borders appear. What code can have the borders appear when the page is opened by the user because the default is they don't display?

Thank you,

Craig...

Hello, I have the following code at the bottom which should load data automatically into the RadListView at form load. However, the text is not visible in the RadListView. I can see the exact number of rows being returned from the SQL database into the RadListView. why is the text not visible?

Thank you for your help in advance! :)

private void MemberUC_Load(object sender, EventArgs e)
        {
            //fill main panel
            this.Dock = DockStyle.Fill;
           
            using (SqlConnection con = new SqlConnection(*connection string string goes here*))
            {
                con.Open();
                cmd = new SqlCommand("SELECT FirstName, MiddleName, LastName, MemberType FROM dbo.MemberInformation");
                cmd.Connection = con;
                dr = cmd.ExecuteReader();
                while (dr.Read())
                {
                    ListViewItem item = new ListViewItem();
                    item.SubItems.Add(dr["FirstName"].ToString());
                    item.SubItems.Add(dr["MiddleName"].ToString());
                    item.SubItems.Add(dr["LastName"].ToString());
                    item.SubItems.Add(dr["MemberType"].ToString());
                    memberDetailsLV.Items.Add(item);
                }
            }
        }

Is there any maximum number of GridViewColumnGroup that you can assign to a RadGrid? I can add 23 groups (each contain subgroup) but when  I add the 24 group I get :
"An unhandled exception of type 'System.NullReferenceException' occurred in Telerik.WinControls.GridView.dll

Additional information: Object reference not set to an instance of an object."
I use the DLL from 2014. Any advice is helpful. I thank you much for your help and time.
My function is 
[QOUTE][ColumnGroupsViewDefinition view = new ColumnGroupsViewDefinition();

            // Group Header

            view.ColumnGroups.Add(new GridViewColumnGroup(""));
            view.ColumnGroups[0].Rows.Add(new GridViewColumnGroupRow());
            view.ColumnGroups[0].Rows[0].Columns.Add(dg_validare_antecalcul.Columns["pk_pr_cip"]);
            view.ColumnGroups[0].Rows[0].Columns.Add(dg_validare_antecalcul.Columns["Bifa"]);
            view.ColumnGroups[0].Rows[0].Columns.Add(dg_validare_antecalcul.Columns["Cip"]);
            view.ColumnGroups[0].Rows[0].Columns.Add(dg_validare_antecalcul.Columns["Program"]);
            view.ColumnGroups[0].Rows[0].Columns.Add(dg_validare_antecalcul.Columns["Reper"]);
            view.ColumnGroups[0].Rows[0].Columns.Add(dg_validare_antecalcul.Columns["Denumire Reper"]);
            view.ColumnGroups[0].ShowHeader = false;

            // CSTA

            GridViewColumnGroup oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTA";

            GridViewColumnGroup oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Pret de vanzare unitar";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTA_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTA_cip"]);

            dg_validare_antecalcul.Columns["CSTA_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTA_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // cost complet

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "COST COMPLET";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["cost_complet_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["cost_complet_cip"]);

            dg_validare_antecalcul.Columns["cost_complet_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["cost_complet_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            oGroup.ShowHeader = false;
            view.ColumnGroups.Add(oGroup);

            // CSTB

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTB";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Profit";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTB_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTB_cip"]);

            dg_validare_antecalcul.Columns["CSTB_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTB_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTC

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTC";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Ch. generale de administratie";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTC_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTC_cip"]);

            dg_validare_antecalcul.Columns["CSTC_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTC_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTD

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTD";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Costuri desfacere";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTD_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTD_cip"]);

            dg_validare_antecalcul.Columns["CSTD_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTD_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTE

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTE";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Cost de productie antecalculat-total";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTE_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTE_cip"]);

            dg_validare_antecalcul.Columns["CSTE_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTE_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTF

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTF";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Ch. indirecte af. Diviziei strategice";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTF_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTF_cip"]);

            dg_validare_antecalcul.Columns["CSTF_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTF_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTG

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTG";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Ch. indirecte af. Diviziei conducatoare";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTG_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTG_cip"]);

            dg_validare_antecalcul.Columns["CSTG_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTG_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTH

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTH";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Cost de productie antecalculat-propriu";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTH_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTH_cip"]);

            dg_validare_antecalcul.Columns["CSTH_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTH_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTI

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTI";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Ch. indirecte de sectie";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTI_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTI_cip"]);

            dg_validare_antecalcul.Columns["CSTI_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTI_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTJ

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTJ";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Materiale directe";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTJ_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTJ_cip"]);

            dg_validare_antecalcul.Columns["CSTJ_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTJ_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTK

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTK";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Nevoi proprii directe";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTK_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTK_cip"]);

            dg_validare_antecalcul.Columns["CSTK_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTK_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTL

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTL";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Chelt. cu scule";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTL_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTL_cip"]);

            dg_validare_antecalcul.Columns["CSTL_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTL_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTM

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTM";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Ch. transp-aprov.";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTM_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTM_cip"]);

            dg_validare_antecalcul.Columns["CSTM_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTM_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTN

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTN";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Manopera directa";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTN_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTN_cip"]);

            dg_validare_antecalcul.Columns["CSTN_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTN_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTO

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTO";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Indexare manop. directa ramasa";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTO_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTO_cip"]);

            dg_validare_antecalcul.Columns["CSTO_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTO_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTP

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTP";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Ch. salarii colaboratori";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTP_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTP_cip"]);

            dg_validare_antecalcul.Columns["CSTP_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTP_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTQ

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTQ";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "C.A.S. si alte fonduri af.(manop. directe+sporuri)";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTQ_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTQ_cip"]);

            dg_validare_antecalcul.Columns["CSTQ_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTQ_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTR

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTR";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "S.D.V. directe";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTR_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTR_cip"]);

            dg_validare_antecalcul.Columns["CSTR_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTR_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTS

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTS";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Alte costuri directe";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTS_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTS_cip"]);

            dg_validare_antecalcul.Columns["CSTS_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTS_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTT

            oGroup = new GridViewColumnGroup();
            oGroup.Text = "CSTT";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Colaborari directe";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTT_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTT_cip"]);

            dg_validare_antecalcul.Columns["CSTT_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTT_cip"].HeaderText = "CIP";

            oGroup.Groups.Add(oSubGroup);
            view.ColumnGroups.Add(oGroup);

            // CSTU
            //GridViewColumnGroup oGroup1 = new GridViewColumnGroup();
            //oGroup1.Text = "";

            GridViewColumnGroup oGroupU = new GridViewColumnGroup();
            oGroupU.Text = "CSTU";

            oSubGroup = new GridViewColumnGroup();
            oSubGroup.Text = "Utilitati directe";
            oSubGroup.Rows.Add(new GridViewColumnGroupRow());
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTU_unitar"]);
            oSubGroup.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTU_cip"]);

            dg_validare_antecalcul.Columns["CSTU_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTU_cip"].HeaderText = "CIP";

            oGroupU.Groups.Add(oSubGroup);
            //oGroup1.Groups.Add(oGroupU);
            view.ColumnGroups.Add(oGroupU);

            // CSTV

            GridViewColumnGroup oGroupV = new GridViewColumnGroup();
            oGroupV.Text = "CSTV";

            GridViewColumnGroup oSubGroupV = new GridViewColumnGroup();
            oSubGroupV.Text = "Corectii";
            oSubGroupV.Rows.Add(new GridViewColumnGroupRow());
            oSubGroupV.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTV_unitar"]);
            oSubGroupV.Rows[0].Columns.Add(dg_validare_antecalcul.Columns["CSTV_cip"]);

            dg_validare_antecalcul.Columns["CSTV_unitar"].HeaderText = "UNITAR";
            dg_validare_antecalcul.Columns["CSTV_cip"].HeaderText = "CIP";

            oGroupV.Groups.Add(oSubGroupV);
            //oGroup1.Groups.Add(oGroupV);
            //oGroup1.ShowHeader = false;
            //view.ColumnGroups.Add(oGroup1);
            view.ColumnGroups.Add(oGroupV);
            dg_validare_antecalcul.ViewDefinition = view;[/QUOTE]
Comment any of the of the grouping and fill grid works. With all the groups the fill grid gives error at the last line.  In my opinion it is because telerik controls think that there too many groups.

Any help is appreciated and thank you for your time and effort.

In description column, the gridlines are displayed in 2 lines in grid's view row default size, I need it to be viewed in a single line.

Please check the attached image.

Thanks in Advance.