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Adding Dropdownlist to GridView

P: n/a
My Time table has TimeID,Employee,PayPeriod,ChargeCodeID,Hours
My Chargecode table has ChargecodeID,c_Text

I need an Editable datagrid that will show the
TimeID,Employee,PayPeriod,C_Text in a label and hours, along with an
edit linkbutton.

When they click on edit, the edit button turns to Update Cancel

TimeID stays read Only
Employee stays read only
PayPeriod stays read only
C_Text turns into a dropdownlist so they can select the proper
chargecode via a dropdownlist
Hours is read/write

What is the best way to do this? I would have thought I add a gridview,
configure the datasource to the Time Table. Then, I go to the
ChargecodeID field and ask for it to be converted to a templatefield.

When i open the templatefield there is a label field in there. I delete
it. I add a dropdownlist. I set its datasource to a source linked to
the ChargeCode Table. I go to Choose datasource and select c_text as
the field to display, ChargeCodeID as the value for the dropdown.

Next I go to edit data bindings and for Selectedvalue I set field
binding to ChargeCodeID
When I try to open the page I get an error message

'DropDownList1' has a SelectedValue which is invalid because it does
not exist in the list of items.
Parameter name: value
Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.ArgumentOutOfRangeException: 'DropDownList1'
has a SelectedValue which is invalid because it does not exist in the
list of items.
Parameter name: value

Source Error:

An unhandled exception was generated during the execution of the
current web request. Information regarding the origin and location of
the exception can be identified using the exception stack trace below.
Stack Trace:
[ArgumentOutOfRangeException: 'DropDownList1' has a SelectedValue which
is invalid because it does not exist in the list of items.
Parameter name: value]
System.Web.UI.WebControls.ListControl.PerformDataB inding(IEnumerable
dataSource) +1777763
System.Web.UI.WebControls.ListControl.OnDataBindin g(EventArgs e)
+104
System.Web.UI.WebControls.ListControl.PerformSelec t() +31
System.Web.UI.WebControls.BaseDataBoundControl.Dat aBind() +70
System.Web.UI.Control.DataBindChildren() +216
System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +216
System.Web.UI.Control.DataBind() +12
System.Web.UI.Control.DataBindChildren() +216
System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +216
System.Web.UI.Control.DataBind() +12
System.Web.UI.WebControls.GridView.CreateRow(Int32 rowIndex, Int32
dataSourceIndex, DataControlRowType rowType, DataControlRowState
rowState, Boolean dataBind, Object dataItem, DataControlField[] fields,
TableRowCollection rows, PagedDataSource pagedDataSource) +221
System.Web.UI.WebControls.GridView.CreateChildCont rols(IEnumerable
dataSource, Boolean dataBinding) +3004

System.Web.UI.WebControls.CompositeDataBoundContro l.PerformDataBinding(IEnumerable
data) +59
System.Web.UI.WebControls.GridView.PerformDataBind ing(IEnumerable
data) +11

System.Web.UI.WebControls.DataBoundControl.OnDataS ourceViewSelectCallback(IEnumerable
data) +111
System.Web.UI.DataSourceView.Select(DataSourceSele ctArguments
arguments, DataSourceViewSelectCallback callback) +29
System.Web.UI.WebControls.DataBoundControl.Perform Select() +149
System.Web.UI.WebControls.BaseDataBoundControl.Dat aBind() +70
System.Web.UI.WebControls.GridView.DataBind() +4
System.Web.UI.WebControls.BaseDataBoundControl.Ens ureDataBound() +82

System.Web.UI.WebControls.CompositeDataBoundContro l.CreateChildControls()
+69
System.Web.UI.Control.EnsureChildControls() +87
System.Web.UI.Control.PreRenderRecursiveInternal() +41
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
+1360

Any help out there?

Nov 28 '06 #1
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1 Reply


P: n/a
Mitch,
I too am getting this same error.The odd thing is that I already have a
DropDown in different column, same grid, and its working. I'm trying to
add a 2nd Dropdown, but its not working. cannot figure out what the
error is.

Did you get your problem solved? If so can you share the solution?

Thanks,
rwiethorn
mi********@yahoo.com wrote:
My Time table has TimeID,Employee,PayPeriod,ChargeCodeID,Hours
My Chargecode table has ChargecodeID,c_Text

I need an Editable datagrid that will show the
TimeID,Employee,PayPeriod,C_Text in a label and hours, along with an
edit linkbutton.

When they click on edit, the edit button turns to Update Cancel

TimeID stays read Only
Employee stays read only
PayPeriod stays read only
C_Text turns into a dropdownlist so they can select the proper
chargecode via a dropdownlist
Hours is read/write

What is the best way to do this? I would have thought I add a gridview,
configure the datasource to the Time Table. Then, I go to the
ChargecodeID field and ask for it to be converted to a templatefield.

When i open the templatefield there is a label field in there. I delete
it. I add a dropdownlist. I set its datasource to a source linked to
the ChargeCode Table. I go to Choose datasource and select c_text as
the field to display, ChargeCodeID as the value for the dropdown.

Next I go to edit data bindings and for Selectedvalue I set field
binding to ChargeCodeID
When I try to open the page I get an error message

'DropDownList1' has a SelectedValue which is invalid because it does
not exist in the list of items.
Parameter name: value
Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.ArgumentOutOfRangeException: 'DropDownList1'
has a SelectedValue which is invalid because it does not exist in the
list of items.
Parameter name: value

Source Error:

An unhandled exception was generated during the execution of the
current web request. Information regarding the origin and location of
the exception can be identified using the exception stack trace below.
Stack Trace:
[ArgumentOutOfRangeException: 'DropDownList1' has a SelectedValue which
is invalid because it does not exist in the list of items.
Parameter name: value]
System.Web.UI.WebControls.ListControl.PerformDataB inding(IEnumerable
dataSource) +1777763
System.Web.UI.WebControls.ListControl.OnDataBindin g(EventArgs e)
+104
System.Web.UI.WebControls.ListControl.PerformSelec t() +31
System.Web.UI.WebControls.BaseDataBoundControl.Dat aBind() +70
System.Web.UI.Control.DataBindChildren() +216
System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +216
System.Web.UI.Control.DataBind() +12
System.Web.UI.Control.DataBindChildren() +216
System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +216
System.Web.UI.Control.DataBind() +12
System.Web.UI.WebControls.GridView.CreateRow(Int32 rowIndex, Int32
dataSourceIndex, DataControlRowType rowType, DataControlRowState
rowState, Boolean dataBind, Object dataItem, DataControlField[] fields,
TableRowCollection rows, PagedDataSource pagedDataSource) +221
System.Web.UI.WebControls.GridView.CreateChildCont rols(IEnumerable
dataSource, Boolean dataBinding) +3004

System.Web.UI.WebControls.CompositeDataBoundContro l.PerformDataBinding(IEnumerable
data) +59
System.Web.UI.WebControls.GridView.PerformDataBind ing(IEnumerable
data) +11

System.Web.UI.WebControls.DataBoundControl.OnDataS ourceViewSelectCallback(IEnumerable
data) +111
System.Web.UI.DataSourceView.Select(DataSourceSele ctArguments
arguments, DataSourceViewSelectCallback callback) +29
System.Web.UI.WebControls.DataBoundControl.Perform Select() +149
System.Web.UI.WebControls.BaseDataBoundControl.Dat aBind() +70
System.Web.UI.WebControls.GridView.DataBind() +4
System.Web.UI.WebControls.BaseDataBoundControl.Ens ureDataBound() +82

System.Web.UI.WebControls.CompositeDataBoundContro l.CreateChildControls()
+69
System.Web.UI.Control.EnsureChildControls() +87
System.Web.UI.Control.PreRenderRecursiveInternal() +41
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
+1360

Any help out there?
Dec 19 '06 #2

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