Save on each page load?

[John Reynolds]

We're using the grid settings (GridSettingsPersister) to save the grid state on each page Page_PreRenderComplete, so that when the user returns later to the page it's always how they left it last. Conversely the Page_Load sets the state the first time.

I can't seem to find any combination of methods to do that here.

[John Reynolds]

Nevermind please - found it.

[danparker276]

On my master page I do.  It seems to be working

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            rpmMaster.LoadState();

        }
}
    protected void Page_PreRender(object sender, EventArgs e)
    {
        if (IsPostBack)
        {

            rpmMaster.SaveState();
        }
    }

[Peter Filipov]

Hello Dan,

You are correct, that is how it could be implemented. For other approaches you could review our demos and documentation.

Regards,
Peter Filipov
Telerik

[Keith]

Mind posting the solution?

[John Reynolds]

Note that a while back we tried to move to the Persistence Framework, but it wasn't very mature. I think it's really worth trying that first before pursuing what we've done.

Here is the page_prerendercomplete, which basically initializes the GridSettingsPersister and then does some things with cookies we use to store the settings.

Private Sub Page_PreRenderComplete(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreRenderComplete

    Dim gsp As New GridSettingsPersister(Me.Projects)
    MainGridState = gsp.SaveSettings

    ' Set the cookie with the current state.

    Dim ChocolateChip As New HttpCookie("PersistentApplicationSettings")

    ChocolateChip.Expires = Today.AddYears(1)

    ChocolateChip("MainGridState") = MainGridState
    ChocolateChip("MainGridStyle") = MainGridStyle
    ChocolateChip("MainGridColumns") = MainGridColumns

    If IsNothing(Response.Cookies("PersistentApplicationSettings")) Then Response.Cookies.Add(ChocolateChip)

    Response.Cookies.Set(ChocolateChip)

End Sub

On the page_load we have an area inside the If not me.ispostback which does the following:

If Not Me.IsPostBack Then

    Try
        MainGridState = Request.Cookies("PersistentApplicationSettings")("MainGridState")
        MainGridStyle = Request.Cookies("PersistentApplicationSettings")("MainGridStyle")
        MainGridColumns = Request.Cookies("PersistentApplicationSettings")("MainGridColumns")
    Catch ex As Exception
        ' There're lots and lots and lots of reasons why that might bomb, from the cookie not existing to us changing it at some time to....
        MainGridState = ""
        MainGridStyle = "Paged"
        MainGridColumns = "Standard"
    End Try

    Me.ProjectView.SelectedValue = MainGridColumns

    Me.GridStyle.SelectedValue = MainGridStyle

    Dim gsp As New GridSettingsPersister(Me.Projects)
    Try
        gsp.LoadSettings(MainGridState)
    Catch ex As Exception
        ' That'll bomb out if we've never saved the settings before, if the grid has radically changed, etc., etc., etc.
        ' Regardless, the best thing to do is start with a clean slate of whatever the grid's settings happen to be at the moment.
        MainGridState = gsp.SaveSettings
    End Try

    FormatGrid()

End If

[Peter Filipov]

Hello John,

Could please elaborate a bit on your case. What are you trying to persist which is not supported of the control. Your feedback will help us to improve it.

Regards,
Peter Filipov
Telerik