Ctype error in Load control

[AlecL]

Hi,

I am trying to load control as a record is being updated in a backend
database. The codes reads like this:

Dim ds As DataSet
CType(Page.FindControl("ddlStatus"),
DropDownList).SelectedValue = _status
Dim sql As String = "select * from _loanApp where status=" &
_status
ds =
SqlHelper.ExecuteDataset(ConfigurationSettings.AppSettings("DSN"), _
CommandType.Text, sql)

CType(Page.FindControl("dgList"), DataGrid).DataSource = ds
CType(Page.FindControl("dgList"), DataGrid).DataBind()

but it is giving me this error.

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

The stack trace reads:

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

Any help is appreciated.

 

[Eliyahu Goldin]

Debug it. Set a breakpoint and see what returns null.

--
Eliyahu Goldin,
Software Developer & Consultant
Microsoft MVP [ASP.NET]
http://msmvps.com/blogs/egoldin
http://usableasp.net

 

[Aidy]

What line gives the error? It will be one of the Page.FindControl commands
not finding the control you're asking for.

 

[AlecL]

What line gives the error? It will be one of the Page.FindControl commands
not finding the control you're asking for.

Hi,

I am trying to load control as a record is being updated in a backend
database. The codes reads like this:

Dim ds As DataSet
CType(Page.FindControl("ddlStatus"),
DropDownList).SelectedValue = _status
Dim sql As String = "select * from _loanApp where status=" &
_status
ds =
SqlHelper.ExecuteDataset(ConfigurationSettings.AppSettings("DSN"), _
CommandType.Text, sql)

CType(Page.FindControl("dgList"), DataGrid).DataSource = ds
CType(Page.FindControl("dgList"), DataGrid).DataBind()

but it is giving me this error.

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

The stack trace reads:

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

Any help is appreciated.- Hide quoted text -

- Show quoted text -

Yes it is the CType(Page.FindControl("ddlStatus"),
DropDownList).SelectedValue = _status line .

Thanks

 

[Aidy]

ddlStatus won't be a dropdownlist with view state enabled then.

Can;t really say much more given the relevant code.

What line gives the error? It will be one of the Page.FindControl
commands
not finding the control you're asking for.

Hi,

I am trying to load control as a record is being updated in a backend
database. The codes reads like this:

Dim ds As DataSet
CType(Page.FindControl("ddlStatus"),
DropDownList).SelectedValue = _status
Dim sql As String = "select * from _loanApp where status=" &
_status
ds =
SqlHelper.ExecuteDataset(ConfigurationSettings.AppSettings("DSN"), _
CommandType.Text, sql)

CType(Page.FindControl("dgList"), DataGrid).DataSource = ds
CType(Page.FindControl("dgList"), DataGrid).DataBind()

but it is giving me this error.

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

The stack trace reads:

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

Any help is appreciated.- Hide quoted text -

- Show quoted text -

Yes it is the CType(Page.FindControl("ddlStatus"),
DropDownList).SelectedValue = _status line .

Thanks