I have an application where I am using an image control to create an image gallery on a product UserControl. When I visit any product to see it's detail, it is working fine; But, there is some problem with one product. If I visit that specific product, it throws an exception in my error log. The exception is :
ViewState Size 5044!
The control code for the gallery is:
<div class="mainImage">
<asp:Image ID="ImageControl" runat="server" BorderWidth="0" CssClass="productImage" />
<asp:Image ID="NoIcon" runat="server" SkinID="NoIcon" Visible="false" EnableViewState="false" CssClass="productImage"/>
<asp:Image ID="NoThumbnail" runat="server" SkinID="NoThumbnail" Visible="false" EnableViewState="false" CssClass="productImage"/>
<asp:Image ID="NoImage" runat="server" SkinID="NoImage" Visible="false" EnableViewState="false" CssClass="productImage"/>
</div>
I am keep on searching but could not figure out the problem. Any one's help will be appreciated.
Related
I have a ListView control as follows (for posting here I've removed the values from my ItemTemplate):
<asp:ListView ID="ListView1" runat="server" DataSourceID="MyDataSource">
<LayoutTemplate>
<div id="requests" runat="server">
<asp:Panel runat="server" id="itemPlaceholder"></asp:Panel>
</div>
<asp:DataPager runat="server" ID="DataPager" PageSize="3">
<Fields>
<asp:NumericPagerField ButtonCount="10" PreviousPageText="<--" NextPageText="-->" />
</Fields>
</asp:DataPager>
</LayoutTemplate>
<ItemTemplate>
<div ID="itemPlaceholder" class="request" runat="server">
<asp:LinkButton ID="button" runat="server" Text='...' CommandName="..."
CommandArgument='...' OnClick="..."
style="...">
</asp:LinkButton> -
</div>
</ItemTemplate>
</asp:ListView>
This ListView exists as a user control (.ascx), which I've embedded into an ASPX web page.
As I expect, when the web page loads, for a list of 9 items, I get 3 pages of 3 items.
When I click to go to the next page, the page loads the next set of items correctly... but only for a brief second. Then a strange thing happens. The page embeds a copy of itself inside the page 6 times, each one of them underneath one of the fields on the form inside the page.
If I then attempt to go to the next or previous page, an ASP.NET server error appears:
The state information is invalid for this page and might be corrupted.
In the stack trace, it shows the following errors:
FormatException: The input is not a valid Base-64 string as it contains a non-base character, more than two padding characters, or a non-white space character among the padding characters.
ViewStateException: Invalid viewstate.
I was able to replicate this on both my browsers, IE8 and Chrome.
you use listview event OnPagePropertiesChanging
like this
<asp:ListView ID="lvCustomers" runat="server" GroupPlaceholderID="groupPlaceHolder1"
ItemPlaceholderID="itemPlaceHolder1" OnPagePropertiesChanging="OnPagePropertiesChanging">
in aspx.cs
protected void OnPagePropertiesChanging(object sender,PagePropertiesChangingEventArgs e)
{
(lvCustomers.FindControl("DataPager1") as DataPager).SetPageProperties(e.StartRowIndex, e.MaximumRows, false);
this.BindListView();
}
BindListView() is method for binding list view
visit this link for example
i hope it's helpfull
I am binding images to datalist. Taking the image name from database and giving the path.
My code is:
<asp:DataList ID="dlImages" runat="server" RepeatColumns="4">
<ItemTemplate>
<asp:ImageButton ID="ImageButton1" Height="200px" Width="200px" ImageUrl='<%# Eval("PageName","D:\Sagar\Kinston\WebSite\ScreenMasterImages\{0}.jpg") %>' runat="server" />
</ItemTemplate>
</asp:DataList>
On .cs page:
ds = gc.GetDataToListBinder("select DISTINCT PageOrderID,PageName from ScreenMaster order by PageOrderID")
dlImages.DataSource = ds.Tables(0)
dlImages.DataBind()
I am facing 2 problems :
When imagename has space in between it adds %20 in between
Eg. if imagename is "API Message", it takes it as: "API%20Message"
I tried On this Problem:
Added ImageUrl='<%#Server.HtmlDecode(Eval("PageName","D:\Sagar\Kinston\WebSite\ScreenMasterImages\{0}.jpg"))'
But I got error:
XML literals and XML properties are not supported in embedded code within ASP.NET
If there is not space Eg.image name is "Charges" , Then also its not showing it in datalist.
When i ran project, and right clicked on it and view source, then its showing me correct path as:
src="D:\Sagar\Kinston\WebSite\ScreenMasterImages\Charges.jpg"
but not showing image.
Please help me with above code.
Where i have made mistake?
What else i should add in it?
Keep it easy and simple.
When trying things like that with URL, to know exactly what to write down, try typing it in your address bar so you'll be able to find the exact syntax needed in order to make it work correctly.
I've done this tons of time and work for me... So you could try something like :
<asp:DataList ID="dlImages" runat="server" RepeatColumns="4">
<ItemTemplate>
<asp:ImageButton ID="ImageButton1" Height="200px" Width="200px"
ImageUrl='<%# String.Format("{0}{1}.jpg", "~\ScreenMasterImages\", Server.HtmlDecode(Eval("PageName"))) %>'
runat="server" />
</ItemTemplate>
</asp:DataList>
hi i have some Problem with my Window-Control, if i set the BrowserDialogBox property to True
im becoming an Error Rendering Control - Window1:
"an unhandled exception has occurred object reference not set to an instance of an object."
Synfusion:
<syncfusion:Window ID="Window1" runat="server" Height="200px" Width="250px"
Title="Öffnen" IconImageUrl="~/Images/KBD-Favicon.ico" EnableXHTML="False" BrowserDialogBox="true" EnableTheming="true">
</syncfusion:Window>
I have used Syncfusion window control as like your code, but it is working without any error which you have reported. Post more of your code and we'll see what you done wrong.
<p>
You can also find <a href="http://go.microsoft.com/fwlink/?LinkID=152368&clcid=0x409"
title="MSDN ASP.NET Docs">documentation on ASP.NET at MSDN</a>.
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:Panel ID="Panel1" runat="server">
<syncfusion:Window ID="Window1" runat="server" Height="200px" Width="250px" Title="Öffnen"
IconImageUrl="~/Images/KBD-Favicon.ico" EnableXHTML="False" InitiallyShown="True"
BrowserDialogBox="true" EnableTheming="true">
</syncfusion:Window>
</asp:Panel>
</p>
I am getting the username and password to run some scripts
<act:ModalPopupExtender ID="unixLoginMPE" runat="server" TargetControlID="rdoUnix"
PopupControlID="unixPanel" BackgroundCssClass="modalBackground" CancelControlID="unixCancel" OkControlID="unixSubmit"
/>
<asp:Panel ID="unixPanel" runat="server"
CssClass="modalPopup" align="center" Style="display: none">Unix Username: <asp:TextBox ID="unixName" ClientIDMode="Static" runat="server" />
<br />
Unix Password: <asp:TextBox ID="unixPass" runat="server" ClientIDMode="Static" TextMode="Password" />
<br />
<asp:Button ID="unixCancel" runat="server" Text="Cancel" />
<asp:Button ID="unixSubmit" ClientIDMode="Static" runat="server" Text="Submit" OnClientClick="enableRDO()" />
</asp:Panel>
In my codebehind, I'm doing something like this just to test if the values have passed.
Dim UNIXPASSWORD As String = unixPass.text
Dim UNIXUSERNAME As String = unixName.Text
MsgBox(UNIXCOMPUTERNAME)
MsgBox(UNIXUSERNAME)
MsgBox(UNIXPASSWORD)
I do reference a script to enable the radio button. I asked a question to help me with that issue, it is all resolved Radio Button won't stay check if I have a modal window open up when it is selected
<script type="text/javascript">
function enableRDO() {
var cancel = document.getElementById('rdoUnix');
cancel.setAttribute('checked', 'true');
};
</script>
For some reason the values are passing just fine in Google Chrome but not in IE. I've been at this for a few hours and don't know what else to try...or search for
EDIT:
I'm still trying to attempt this. I setup up dummy text boxes which I will hide later on if I can pass to them. I'm still very lost with this...
<asp:TextBox ID="dummyUnixName" runat="server" />
<asp:TextBox ID="dummyUnixPass" runat="server" />
If you aren't performing a postback or an AJAX call, nothing will be passed to the code behind.
During debugging, Console.WriteLine can be redirected to the output window in VS; in production, it's going to go nowhere. A logging solution is often appropriate for a web application which needs to know more of what happened than which page was requested by a user (IIS logs).
I'm working through examples in a book trying to learn ASP.NET, and I've stumbled on something strange in there. First of all, if I type it as it's written in the book, VS gives me errors. This is the code as it's written in the book:
<asp:DataList ID="employeesList" runat="server">
<ItemTemplate>
<asp:Literal ID="extraDetailsLiteral" runat="server" EnableViewState="false" />
Name: <strong><%#Eval("Name") %></strong><br />
Username: <strong><%#Eval("Username") %></strong><br />
<asp:LinkButton ID="detailsButton" runat="server" Text=<%#"View more details about " + Eval("Name")%>
CommandName="MoreDetailsPlease"
CommandArgument=<%#Eval("EmployeeID")%> />
</ItemTemplate>
<SeparatorTemplate>
<hr />
</SeparatorTemplate>
</asp:DataList>
So, I've plucked at it for a while, and came up with this solution which actually compiles:
<asp:DataList ID="employeesList" runat="server" onitemcommand="employeesList_ItemCommand">
<ItemTemplate>
<asp:Literal ID="extraDetailsLiteral" runat="server" EnableViewState="false" />
Name: <strong><%#Eval("Name") %></strong><br />
Username: <strong><%#Eval("Username") %></strong><br />
<asp:LinkButton ID="detailsButton" runat="server" Text='View more details about <%# Eval("Name") %>'
CommandName="MoreDetailsPlease" CommandArgument='<%Eval("EmployeeID") %>' />
</ItemTemplate>
<SeparatorTemplate>
<hr />
</SeparatorTemplate>
</asp:DataList>
Notice that I've also added the OnItemCommand in the asp:DataList tag, so now I'm able to fire the event as expected.
However, results in the browser isn't what I expect; the Name and Username listed in strong text show just fine, but the Literal control that should show extra details (the EmployeeID field) and the Name field inside the LinkButton won't show their values in the page:
not showing as expected http://lh6.ggpht.com/_x84bQLYH57A/SgxzygartcI/AAAAAAAAAIY/nhT-6RUJa6o/s144/EmployeeDirectory_notshowing.jpg
It should say "EmployeeID: 1" and "View more details about Zak Ruvalcaba"
I guess it's the Eval function that's not working when inside another control, can anyone help me out?
Change the LinkButton as :
<asp:LinkButton ID="detailsButton" runat="server"
Text='<%# Eval("Name", "View more details about {0}") %>'
CommandName="MoreDetailsPlease"
CommandArgument='<%# Eval("EmployeeID") %>' />
Sorry I confused the order of parameters. I updated my answer. Format must be the second parameter.
You can view another question I posted yesterday concerning something eerily similar here:
Need help with Eval inside DataList
I do believe Canavar actually gave the correct answer, however.