AJAX question (I think)

[SAL]

Hello,
I'm using vs2005 and ajax exentions 1.0.61025.0.
I have a page with a Gridview control that's inside of an update panel. I
also have a DetailsView on this page inside of another update panel. The
Detailsview handles the inserting of records into the Gridview.

The page is behaving as expected except the ItemInserting event (and there
the inserting) is being called twice. I have logic in place that is handling
this but it would be nice if the inserting events were not being called
twice and I don't see why this is happening. I'm including the html and the
code behind in case it could help. I'm sure this is simple but I just am not
getting it.

Thanks in advance
S


HTML:
<asp:ScriptMana ger ID="ScriptManag er1" runat="server">
</asp:ScriptManag er>
<asp:UpdatePane l ID="UpdatePanel 1" runat="server">
<ContentTemplat e>
<asp:GridView ID="gvStormDeta il" runat="server"
AutoGenerateCol umns="False" DataSourceID="d sStormDetail"
EnableViewState ="False" SkinID="gridvie wSkin" Width="568px">
<Columns>
<asp:BoundFie ld DataField="Stor mValueID"
HeaderText="Sto rmValueID" InsertVisible=" False"
ReadOnly="True" SortExpression= "StormValue ID"
Visible="False" />
<asp:BoundFie ld DataField="Stor mAssetType"
HeaderText="Ass et Category" SortExpression= "StormAssetType " >
<ItemStyle HorizontalAlign ="Center" />
</asp:BoundField>
<asp:BoundFie ld DataField="Stor mAssetTypeID"
HeaderText="Sto rmAssetTypeID" SortExpression= "StormAssetType ID"
Visible="False" />
<asp:BoundFie ld DataField="Stor mAssetName"
HeaderText="Sto rm Asset Name" SortExpression= "StormAssetName " >
<ItemStyle HorizontalAlign ="Center" />
</asp:BoundField>
<asp:BoundFie ld DataField="Uniq ueID"
HeaderText="Uni queID" SortExpression= "UniqueID" >
<ItemStyle HorizontalAlign ="Center" />
</asp:BoundField>
<asp:BoundFie ld DataField="Desc ription"
HeaderText="Des cription" SortExpression= "Descriptio n" >
<ItemStyle HorizontalAlign ="Center" />
</asp:BoundField>
<asp:BoundFie ld DataField="EstV alue"
HeaderText="Est imated Value" SortExpression= "EstValue"
DataFormatStrin g="{0:C0}" HtmlEncode="Fal se" >
<ItemStyle HorizontalAlign ="Right" />
</asp:BoundField>
<asp:BoundFie ld DataField="Cnty AssetID"
HeaderText="Cnt yAssetID" SortExpression= "CntyAssetI D"
Visible="False" />
</Columns>
</asp:GridView>
<br />
<asp:ObjectData Source ID="dsStormDeta il" runat="server"
OldValuesParame terFormatString ="original_{ 0}"
SelectMethod="G etStormAssetsBy CntyAssetdId"
TypeName="Storm AssetsMainBLL" EnableViewState ="False">
<SelectParamete rs>
<asp:SessionPar ameter Name="id"
SessionField="c ntyAssetId" Type="Int32" />
</SelectParameter s>
</asp:ObjectDataS ource>
<br />
</ContentTemplate >
<Triggers>
<asp:AsyncPostB ackTrigger ControlID="dvSt ormInsert"
EventName="Item Inserted" />
</Triggers>
</asp:UpdatePanel >
<asp:UpdatePane l ID="upInsert" runat="server" EnableViewState ="False"
UpdateMode="Con ditional" ChildrenAsTrigg ers="False">
<ContentTemplat e>
<asp:Label ID="lblAssetTyp e" runat="server"
EnableViewState ="False" Font-Size="10pt"
Text="Category" Width="88px" BackColor="#EFE FEF"
Height="18px"></asp:Label><asp: DropDownList ID="ddlAssetTyp e" runat="server"
AutoPostBack="T rue" DataSourceID="d sAssetTypes"
DataTextField=" StormAssetType"
DataValueField= "StormAssetType ID"
Width="156px"
EnableViewState ="False">
</asp:DropDownLis t><asp:ObjectDa taSource
ID="dsAssetType s" runat="server"
OldValuesParame terFormatString ="original_{ 0}"
SelectMethod="G etAssetTypesPlu sNone"
TypeName="Storm AssetTypeBLL" EnableViewState ="False"></asp:ObjectDataS ource>
<br />
<asp:DetailsVie w ID="dvStormInse rt"
runat="server"
DefaultMode="In sert"
EnableViewState ="False"
Height="50px"
Width="280px"
SkinID="details viewSkin"
AutoGenerateRow s="False"
DataKeyNames="S tormValueID"
DataSourceID="d sStormInsert"
OnItemInserted= "dvStormInsert_ ItemInserted"
OnItemInserting ="dvStormInsert _ItemInserting" >
<Fields>
<asp:BoundFie ld DataField="Stor mValueID"
HeaderText="Sto rmValueID" InsertVisible=" False"
ReadOnly="True" SortExpression= "StormValue ID" />
<asp:TemplateFi eld HeaderText="Cnt yAssetID"
SortExpression= "CntyAssetI D">
<EditItemTempla te>
<asp:TextBox ID="TextBox1" runat="server"
Text='<%# Bind("CntyAsset ID") %>'></asp:TextBox>
</EditItemTemplat e>
<InsertItemTemp late>
<asp:TextBox ID="txtCntyAsse tId" runat="server"
Enabled="False" EnableViewState ="False"
Text='<%# Bind("CntyAsset ID")
%>'></asp:TextBox>
</InsertItemTempl ate>
<ItemTemplate >
<asp:Label ID="Label1" runat="server" Text='<%#
Bind("CntyAsset ID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateFie ld>
<asp:TemplateFi eld HeaderText="Sto rm Asset"
SortExpression= "StormAsset ID">
<EditItemTempla te>
<asp:TextBox ID="TextBox2" runat="server"
Text='<%# Bind("StormAsse tID") %>'></asp:TextBox>
</EditItemTemplat e>
<InsertItemTemp late>
<asp:DropDownLi st ID="ddlStormAss et"
runat="server"
DataSourceID="d sStormAsset"
DataTextField=" StormAssetName"
DataValueField= "StormAsset ID"
Width="156px">
</asp:DropDownLis t>
<asp:ObjectData Source ID="dsStormAsse t"
runat="server"
OldValuesParame terFormatString ="original_{ 0}"
SelectMethod="G etStormAssetsBy AssetTypeId"
TypeName="Storm AssetsBLL">
<SelectParamete rs>
<asp:ControlPar ameter
ControlID="ddlA ssetType" Name="id" PropertyName="S electedValue"
Type="Int32" />
</SelectParameter s>
</asp:ObjectDataS ource>
</InsertItemTempl ate>
<ItemTemplate >
<asp:Label ID="Label2" runat="server" Text='<%#
Bind("StormAsse tID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateFie ld>
<asp:TemplateFi eld HeaderText="Des cription"
SortExpression= "Descriptio n">
<EditItemTempla te>
<asp:TextBox ID="TextBox4" runat="server"
Text='<%# Bind("Descripti on") %>'></asp:TextBox>
</EditItemTemplat e>
<InsertItemTemp late>
<asp:TextBox ID="txtDescript ion" runat="server"
Text='<%# Bind("Descripti on") %>'></asp:TextBox>
</InsertItemTempl ate>
<ItemTemplate >
<asp:Label ID="Label4" runat="server" Text='<%#
Bind("Descripti on") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateFie ld>
<asp:TemplateFi eld HeaderText="Uni queID"
SortExpression= "UniqueID">
<EditItemTempla te>
<asp:TextBox ID="TextBox5" runat="server"
Text='<%# Bind("UniqueID" ) %>'></asp:TextBox>
</EditItemTemplat e>
<InsertItemTemp late>
<asp:TextBox ID="txtUniqueId " runat="server"
Text='<%# Bind("UniqueID" ) %>'></asp:TextBox>
<asp:RequiredFi eldValidator ID="rfvUniqueId "
runat="server" EnableViewState ="False"
ErrorMessage="U niqueID is a required field"
ControlToValida te="txtUniqueId ">*</asp:RequiredFie ldValidator>
</InsertItemTempl ate>
<ItemTemplate >
<asp:Label ID="Label5" runat="server" Text='<%#
Bind("UniqueID" ) %>'></asp:Label>
</ItemTemplate>
</asp:TemplateFie ld>
<asp:TemplateFi eld ShowHeader="Fal se">
<InsertItemTemp late>
<asp:LinkButt on ID="lbInsert" runat="server"
CausesValidatio n="True" CommandName="In sert"
Text="Insert"></asp:LinkButton>
<asp:LinkButt on ID="lbCancel" runat="server"
CausesValidatio n="False" CommandName="Ca ncel"
OnClick="lbCanc el_Click"
Text="Cancel"></asp:LinkButton>
</InsertItemTempl ate>
<ItemTemplate >
<asp:LinkButt on ID="LinkButton1 " runat="server"
CausesValidatio n="False" CommandName="Ne w"
Text="New"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateFie ld>
</Fields>
</asp:DetailsView >
<asp:ObjectData Source ID="dsStormInse rt" runat="server"
EnableViewState ="False" InsertMethod="S tormValueInsert "
OldValuesParame terFormatString ="original_{ 0}" SelectMethod="G etStormValues"
TypeName="Storm ValueBLL">
<InsertParamete rs>
<asp:Paramete r Name="cntyAsset Id" Type="Int32" />
<asp:Paramete r Name="stormAsse tId" Type="Int32" />
<asp:Paramete r Name="descripti on" Type="String" />
<asp:Paramete r Name="uniqueId" Type="Int32" />
</InsertParameter s>
</asp:ObjectDataS ource>
</ContentTemplate >
<Triggers>
<asp:AsyncPostB ackTrigger ControlID="ddlA ssetType"
EventName="Sele ctedIndexChange d" />
</Triggers>
</asp:UpdatePanel >


Code Behind:
#Region "Constants"
Protected Const ASSETTYPEID As String = "assetTypeI d"
Protected Const CNTYASSETID_ROW As Integer = 0
'Protected Const ASSETTYPE_ROW As Integer = 1
Protected Const STORMASSET_ROW As Integer = 1
Protected Const DESCRIPTION_ROW As Integer = 2
Protected Const UNIQUEID_ROW As Integer = 3
Protected Const ASSETTYPE_DD As String = "ddlAssetTy pe"
Protected Const STORMASSET_DD As String = "ddlStormAs set"
Protected Const CNTYASSETID_TXT As String = "txtCntyAssetId "
Protected Const DESCRIPTION_TXT As String = "txtDescription "
Protected Const UNIQUE_TXT As String = "txtUniqueI d"
#End Region

Protected Sub dvStormInsert_I temInserting(By Val sender As Object, ByVal e
As System.Web.UI.W ebControls.Deta ilsViewInsertEv entArgs) Handles
dvStormInsert.I temInserting
e.Cancel = True
Dim ddl As DropDownList =
dvStormInsert.R ows(STORMASSET_ ROW).FindContro l(STORMASSET_DD )

If Not ddl Is Nothing Then
If ddl.SelectedVal ue = "" Then Return
Dim sBLL As New StormValueBLL
Dim stormAssetId, uid As Integer
Dim desc As String
stormAssetId = ddl.SelectedVal ue
uid = e.Values(UNIQUE ID_ROW - 1)
desc = e.Values(DESCRI PTION_ROW - 1)
sBLL.StormValue Insert(e.Values (CNTYASSETID_RO W), stormAssetId,
desc, uid)
ResetDropdowns( )
Dim txt As TextBox =
dvStormInsert.R ows(DESCRIPTION _ROW).FindContr ol(DESCRIPTION_ TXT)
If Not txt Is Nothing Then txt.Text = Nothing
txt = dvStormInsert.R ows(UNIQUEID_RO W).FindControl( UNIQUE_TXT)
If Not txt Is Nothing Then txt.Text = Nothing
upInsert.DataBi nd()
End If
End Sub

Protected Sub Page_LoadComple te(ByVal sender As Object, ByVal e As
System.EventArg s) Handles Me.LoadComplete
SetCntyAssetId( )
End Sub

Protected Sub dvStormInsert_I temInserted(ByV al sender As Object, ByVal e
As System.Web.UI.W ebControls.Deta ilsViewInserted EventArgs) Handles
dvStormInsert.I temInserted
SetCntyAssetId( )
ResetDropdowns( )
End Sub

Protected Sub SetCntyAssetId( )
Dim txt As TextBox =
dvStormInsert.R ows(CNTYASSETID _ROW).FindContr ol(CNTYASSETID_ TXT)
If Not txt Is Nothing Then
Dim id As Integer = Session("cntyAs setId")
If id 0 Then
txt.Text = id
End If
End If
End Sub

Protected Sub ResetDropdowns( )
ddlAssetType.Se lectedValue = -1
End Sub

Protected Sub lbCancel_Click( ByVal sender As Object, ByVal e As
System.EventArg s)
Me.ddlAssetType .SelectedValue = -1
Me.upInsert.Dat aBind()
'Dim ddl As DropDownList =
dvStormInsert.R ows(STORMASSET_ ROW).FindContro l(STORMASSET_DD )
'If Not ddl Is Nothing Then
' ddl.Items.Clear ()
'End If
End Sub

[Allen Chen [MSFT]]

RE: AJAX question (I think)

Hi,

Since you're using VB.NET, both specifying:

OnItemInserting ="dvStormInsert _ItemInserting"

in aspx and specifying:

Handles dvStormInsert.I temInserting

in aspx.vb will attach the event handler to the ItemInserting event.
Therefore, the event handler will be called twice.

To solve this problem you can remove either of above ones.

Please let me know if it works.

Regards,
Allen Chen
Microsoft Online Community Support

Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
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msdnmg@microsof t.com.

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[SAL]

Re: AJAX question (I think)

Ahh, yes. that did work. I don't know how that happened as I don't recall
adding it in both places.

I have another issue with this web page involving AJAX, I believe.

I have a button on this page. The Click even does not fire. However, when
the button is clicked, the text for a required field validator in the
details view appears.????

Should I repost for this question?

S

"Allen Chen [MSFT]" <v-alchen@online.m icrosoft.comwro te in message
news:EA85eMsSJH A.1668@TK2MSFTN GHUB02.phx.gbl. ..

Hi,
>
Since you're using VB.NET, both specifying:
>
OnItemInserting ="dvStormInsert _ItemInserting"
>
in aspx and specifying:
>
Handles dvStormInsert.I temInserting
>
in aspx.vb will attach the event handler to the ItemInserting event.
Therefore, the event handler will be called twice.
>
To solve this problem you can remove either of above ones.
>
Please let me know if it works.
>
Regards,
Allen Chen
Microsoft Online Community Support
>
Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
msdnmg@microsof t.com.
>
=============== =============== =============== =====
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/en-us/subs...#notifications.
>
Note: MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 2 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions. Issues of this
nature are best handled working with a dedicated Microsoft Support
Engineer
by contacting Microsoft Customer Support Services (CSS) at

http://msdn.microsoft.com/en-us/subscriptions/aa948874.aspx

=============== =============== =============== =====
This posting is provided "AS IS" with no warranties, and confers no
rights.
>

[Allen Chen [MSFT]]

Re: AJAX question (I think)

Hi,

Glad to know you've solved this issue.

As to the new one, since it's a different issue I think it's better to
start a new post for it. Please post some code that can reproduce this
problem and I'll follow up.

Regards,
Allen Chen
Microsoft Online Community Support