[Solved] Dynamic columns in Grid, postback (MasterPage)

[Daniel Botero Correa]

Hi everybody,

I try to add Columns to a RadGrid dynamically and I'm able to do it, but, when i do a post back
the RadGrid's columns are reinitialized and i don't want it. i want that my RadGrid stay
as it was before postback. Why? i want to save the columns' position and if the RadGrid
is reinitialized, I can't it.

Example:

RadGrid Status (initial):

Column1 Column2 Column3

User changes the columns' order:

Column3 Column2 Column1

User does post back and RadGrid come back to status initial.

Column1 Column2 Column3

If i do that in a page aspx (which not inherits of a masterpage), my code works, but
with a masterPage doesnt work. someone has an idea?

It's a very simple thing but i tried to do it and I'm not be able, i read all forums and i do all, but that not works in a page which inherits of a master page.

Someone can help me?

My RadGrid's code:

                                <telerik:RadGrid ID="RadGrid2" runat="server" AllowPaging="false"
                                    EnableLinqExpressions="false" GridLines="None"  AutoGenerateColumns="false"
                                        Skin="InductDefault" EnableEmbeddedSkins="false"
                                        onneeddatasource="RadGrid2_NeedDataSource">
                                    <MasterTableView AutoGenerateColumns="False" EnableNoRecordsTemplate="false"
                                        HierarchyDefaultExpanded="false" HierarchyLoadMode="Client" Width="100%">
                                    </MasterTableView>
                                    <ClientSettings AllowColumnHide="true" AllowColumnsReorder="true"
                                        ReorderColumnsOnClient="true">
                                    </ClientSettings>
                                </telerik:RadGrid>

C# code:

    protected void page_Init(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            createRadGrid2();
        }
    }

    public void createRadGrid2()
    {
        XDocument xmlDoc = XDocument.Load(RadGridXmlConfig);
        var Columns = xmlDoc.Elements("Columns")
                              .Elements("Column")
                              .Attributes("uniqueName");

        foreach (var colTemp in Columns)
        {
            String uniqueName = colTemp.Value;
            tableTripsDetail.Columns.Add(uniqueName);
            RadGrid2.MasterTableView.Columns.Add(createBoundColumn(uniqueName));
        }
    }

    protected void RadGrid2_NeedDataSource(object source, GridNeedDataSourceEventArgs e)
    {
        RadGrid2.DataSource = getTableReportTripsDetail();
    }

    private GridBoundColumn createBoundColumn(String valueUnique)
    {
        GridBoundColumn BoundColumn = new GridBoundColumn();
        BoundColumn.DataField = valueUnique;
        BoundColumn.HeaderText = valueUnique;
        BoundColumn.SortExpression = valueUnique;
        BoundColumn.UniqueName = valueUnique;

        return BoundColumn;
    }

[Veli]

Hi Daniel,

Have you, by any chance, disabled ViewState in the master page? I cannot reproduce this behavior. Particularly, I can see no difference between using and not using a master page.

Greetings,
Veli
the Telerik team

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