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Amazing at times, annoying at others! 
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Hi,
I have form with 3 tabs,
i each one i have a grid.
My problem is - sometimes i'm getting this error when i'm pressing the EDIT button.
Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.
At the first time nothing happens,
but at the second click i'm getting the above error
Can someone please please help me?
Thanks;
Tamir
Here is an example of one of the grids (i post only one column):
<asp:GridView ID="GridViewTransTab" runat="server" ShowFooter="True" AutoGenerateColumns="False"
DataKeyNames="fName,main,startHour,endHour" OnDataBinding="GridViewTransTab_DataBinding"
OnRowDataBound="GridViewTransTab_RowDataBound" OnRowCreated="GridViewTransTab_OnRowCreated"
OnRowCancelingEdit="GridViewTransTab_RowCancelingEdit" OnRowCommand="GridViewTransTab_RowCommand"
OnRowEditing="GridViewTransTab_RowEditing" OnRowUpdating="GridViewTransTab_RowUpdating"
BackColor="#00CCFF" BorderWidth="2px" Font-Names="Arial" Font-Size="12pt" OnRowDeleting="GridViewTransTab_RowDeleting"
EnableViewState="true">
<RowStyle BorderWidth="2px" />
<Columns>
<asp:TemplateField HeaderText="Full Name">
<EditItemTemplate>
<asp:DropDownList ID="txtFullNameTrans" runat="server" DataTextField="FullName" DataValueField="PersonId">
</asp:DropDownList>
</EditItemTemplate>
<FooterTemplate>
<asp:DropDownList ID="txtFullNameNewTrans" runat="server" DataTextField="FullName" DataValueField="PersonId">
</asp:DropDownList>
</FooterTemplate>
<ItemTemplate>
<asp:Label ID="lblFullNameTrans" runat="server" Text='<%# Bind("fName") %>'></asp:Label></ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Edit" ShowHeader="False">
<EditItemTemplate>
<asp:LinkButton ID="lbkUpdateTrans" runat="server" CausesValidation="False" CommandName="Update"
Text="Update "></asp:LinkButton><asp:LinkButton ID="lnkCancelTrans" runat="server" CausesValidation="False"
CommandName="Cancel" Text="Cancel"></asp:LinkButton></EditItemTemplate>
<FooterTemplate>
<asp:LinkButton ID="lnkAddTrans" runat="server" CausesValidation="False" CommandName="Insert"
Text="Insert"></asp:LinkButton></FooterTemplate>
<ItemTemplate>
<asp:LinkButton ID="lnkEditTrans" runat="server" CausesValidation="False" CommandName="Edit"
Text=" Edit"></asp:LinkButton></ItemTemplate>
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:CommandField HeaderText="Delete" ShowDeleteButton="True" ShowHeader="True" />
</Columns>
<FooterStyle BorderWidth="2px" Font-Names="Arial" Font-Size="12pt" />
<HeaderStyle BorderWidth="2px" Font-Size="14pt" />
<EditRowStyle BackColor="#33CC33" />
</asp:GridView>
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Can you add the code behind, if you are adding a control dynamically (something like Controls.Add(myControl);), not doing this at postback is the most likely cause of your error (as the exception states).
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Keith Barrow wrote: if you are adding a control dynamically (something like Controls.Add(myControl);), not doing this at postback is the most likely cause of your error (as the exception states).
I'm not using this command.
Controls.Add(myControl);
Keith Barrow wrote: Can you add the code behind
My code is very very long,
i don't think it's smart to post it here.
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Can someone please help me with this problem?
I'm stuck
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This is considered rude. See the FAQs and guidance stickies at the top of the forum.
I've told you what the problem probably is (dynamically added controls), and asked for the code. I am 80% certain you are adding a control in code-behind that is being accessed in postback before it is getting re-added, but without the code it is impossible to tell.
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hi sir/madam
we r trying to execute this code from asp webform. its asking us to add namespaces...we r not able to to understand wat r the namespaces for this. so plz send me the namespaces..to this mail:lavibyni@gmail.com if any one konws it.
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lol 
Your Subject is not the same as your content. What is exactly your problem ?
Vuyiswa Maseko,
Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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<%@Import namespace= 'System.Text' %>
<%@Import namespace= 'System.IO' %>
<%@Import namespace= 'System.Net' %>
<%@Import namespace= 'System.Web' %>
<%@Import namespace= 'System.Web.UI' %>
<%@Import namespace= 'System.Web.Services' %>
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Forgive if it is not a right place to post this question
See Am developing a web based social networking website in ASP.NET say X-Netowork.. This is connected with VSS and also we are having number of portals with minor changes in logo and some labels say for ex Y-Network, Z-Network etc.
I am facing a problem every week end to integrate the changes done in X-Network to Y-Network and Z-network..
Is there any other way to do this easily without manual integration
Expecting your help
Ahamed Azeem
software Programmer
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I dont understand your problem. Please explain clearly.
Vuyiswa Maseko,
Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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Thank u for your reply
We are developing a social networking website for some clients.
Basic website xnetwork
And we are having ynetwork, znetwork same as xnetwork.
But still the developing is going on with xnetwork.. Each and every change done in xnetwork has to be updated with ynetwork and znetwork... My question is "Is there any way to handle it without manual work"
Regards
Ahamed Azeem
software Programmer
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Unfortunately, it depeds on how you designed your website. e.g if you want these sites to share a Data Layer , what you can do is that create a Data Layer and a Business logic layer as DLL's at the end when you deploy you will not need to do anything but deploy the dll's and nothing else. So i am not sure what part of your website is a maintanance nightmare , but what you are experiencing means that its time to componetise your functionalities in your website.
Vuyiswa Maseko,
Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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You probably should just start using resx files. That will handle changing of images and labels. If you actually have different pages, or different functionality on the same page in different sites, then it gets much more complicated.
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how to trigger enter key in gridview column?
column1 column2 column3
3 2 6
4 4 16
1 2 2
formula:
column1 * column2 = column3
when i press enter key in column2 after i input number ,
it will automatically update the column3 for result
and refresh the gridview. how to do that?
C# コードMicrosoft End User
2000-2008
「「「「「「「「「「「「「「「「「「「「「「「「「「「「
The best things in life are free
」」」」」」」」」」」」」」」」」」」」」」」」」」」」
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Add javascript to calculate total in onblur event of the textbox in EditTemplateColumn of Column2 in the GridView.
..Go Green..
The 30,000th post in Site Bugs / Suggestions[ ^] recently is my 3rd feat in posting the magical numbered post. I posted the 500th and 1000th post in GIT.
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thanks. got an idea.
C# コードMicrosoft End User
2000-2008
「「「「「「「「「「「「「「「「「「「「「「「「「「「「
The best things in life are free
」」」」」」」」」」」」」」」」」」」」」」」」」」」」
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1) Of course not, Microsoft does not make software for Enterprise applications
2) Its up to you to decide what data and what modules. How the hell do we know?
3) You want more than the project template provided by Visual Studio?
4) See #3
I know the language. I've read a book. - _Madmatt
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Is there any way we might get an idea of what kind of Enterprise level application? Perhaps we could ask Mr. Spock?
CQ de W5ALT
Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software
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1. It is like Kellog's Special K, it can only help as part of your calorie controlled diet.
2. The architecture should fit the application needs
3. All open source projects are a possibility
4. The ones that fit your need best.
This reply was brought to you by Zen, and the word "sarcasm". You haven't really asked any concrete questions, so I haven't given any concrete answers. That is why I gave you a vote of 1.
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HI
I am new in ap.net , i want to create an application in social networking site in asp.net.like facebook.
I search the tutorial regarding socialnetworking website that help me in making a website but I couldnot fint any good result.
Can some some boby help me
Regard
javaid
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This is a ridiculous question: if you want to create a social networking site you're going to have to a) learn to program and b) figure out how to design an application that does what you want and c) dlearn how to research and use google. Just like the rest of us only you seem to want to cut out the years of hard work and learning that we all put in.
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.
nils illegitimus carborundum
me, me, me
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Watch the movie "The Social Network" and do everything the main character does, but in C#.
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I may just be mean-spirited, but I really want to ridicule this question. I appreciate that you are new to asp.net, but just think a little bit. Who on earth would post a tutorial on building a complete social networking site. Anyone who would take the time to do that would simply build the site and call it "facebook" or "myspace" or "mySuperDuperOverDoneIdeaSpace".
I wasn't, now I am, then I won't be anymore.
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