Object reference not set to an instance of an object.

[MayoorPatel]

Hi there guys I am getting the follwing error when I run my page.

System.NullReferenceException: Object reference not set to an instance of an object.

at DCA.TribunalsService.Lands.Web.Search.Page_Load(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain()
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.ProcessRequestMain()
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        PagerControl.PageSize = Configuration.GetInt("DCA.TribunalsService.Lands.Web.Search.Grid.PageSize")
        Page.RegisterClientScriptBlock("dropdowns", Me.ClientSideScript)
        Utility.PopulateCommissioners(drpCommissioner, 0)

        If Not IsPostBack Then
            Utility.PopulateCategory(drpCategory)
            PagerControl.PageIndex = 1
        End If

        If IsPostBack Then

            If Not Request.UrlReferrer.AbsolutePath.IndexOf("view.aspx") = -1 Then
                ' have come back from view page
                Utility.PopulateCategory(drpCategory)
                ' sets the page index what it was before the search
                PagerControl.PageIndex = Request.QueryString("PagerControl_PageIndex")
                '  sets the category dropdown to what it was before
                If Not Request("drpCategory").Equals(String.Empty) Then
                    drpCategory.Items.FindByValue(Request.QueryString("drpCategory")).Selected = True
                End If
            End If
            ' if the category value was not "--choose a category" then we need to populate subcategory
            ' with the corresponding value
            If Not drpCategory.SelectedItem.Value = -1 Then
                Utility.PopulateSubCategory(drpSubcategory, drpCategory.SelectedItem.Value)
                ' if the subcategory was not empty the set the selected value to that of what it was before
                If Not Request("drpSubcategory").Equals(String.Empty) Then
                    drpSubcategory.Items.FindByValue(Request("drpSubcategory").ToString).Selected = True
                End If
            End If
            ' if the commissioner dropdown was not empty then set that to what it was before
            If Not Request("drpCommissioner").Equals(String.Empty) Then
                drpCommissioner.Items.FindByValue(Request("drpCommissioner").ToString).Selected = True
            End If
        End If

        drpCategory.Attributes.Add("onchange", "populate(this, 'Form1', 'drpSubcategory', this.selectedIndex);")
        btnSearch.Attributes.Add("onclick", "document.forms[0].action = ""default.aspx""")
    End Sub

have hacked around all day to no avail, can anyone help or see the prblem?

Any help as always appreciated.

Mayoor

 

[ca8msm]

Which line do you get the error on?


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[MayoorPatel]

Hi there. I dont actually get a page number error is just displays that message.

:-(

 

[ca8msm]

So debug the project and find out where it occurs...


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Try the Search Facility or read FAQ222-2244 on how to get better results.

 

[MayoorPatel]

Also I forgot to mention that the problem only occurs on the live server but NOT locally. Therefore I cant debug locally.

 

[ca8msm]

Try experimenting with some Try/Catch blocks then and see where the error is occurring.


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Need help finding an answer?

Try the Search Facility or read FAQ222-2244 on how to get better results.