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It looks like you haven't registered your control assembly. So default ASP.NET will look in System.Web.UI.WebControls and throws this error. Add the below tag to top of your page.
<%@ Register Assembly="AssemblyName" Namespace="YourNameSpace" TagPrefix="cc1" %> In your sample, call this like
<cc1:ResourceHyperLink ID="lblResource_First" Runat="server" Text='My' BorderColor="white" > </cc1:ResourceHyperLink>
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Hi, i am developing a search engine.when i type a keyword in text box,the matched word should be highlighted and all the results should be appeared.
sending sample code would be appreciable.
Thanks n regards
Krishna PRASAD.
fttyhtrhyfytrytrysetyetytesystryrty
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I guess you want to parse the page, so that when you show it, you've wrapped the word in question in a div that sets a style to change it's color. Like Google does.
So, you've got the rest done, and just need to get the syntax highlighting to work ?
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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hi yadlaprasad,
You wanna make use of Google's strategy which simplifies your search structure. I seen one article based on it, which helps you alot. Please check out this link.
http://www.codeproject.com/KB/IP/Spideroo.aspx
Hope this will help you.
Thanks & Regards
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I'm new to custom controls and having trouble, am working with VS2008: I'm trying to edit an application that uses javascript input control on the page, and PostBackEventHandler and PostBackDataHandler to handle postbacks
We have a main aspx page with a set of controls nested inside one another. I want to create a new nested control consisting of a textbox and an adjacent hyperlink to trigger storage of the contents of the textbox in the class variables of the parent control. I created a simple test app that just includes the custom control directly in the main webpage's codebehind, but can't get the postback working. If I enable script debugging, I get error "Microsoft JScript runtime error: Object expected" at the "__doPostBack('__Page','Hello')" part of the script (from the GetPostBackEventReference") call. Simplified code for my custom control is included below, and below that is the code I include in the .aspx.cs page's codebehind where I'm trying to use the control.
Thank you for any help!
public class MyTestClass : Control, IPostBackEventHandler, IPostBackDataHandler
{
string textBoxValue;
System.Web.UI.Page myPage;
MyTestClass(System.Web.UI.Page myPage)
{
this.myPage = myPage;
}
public event EventHandler LinkClick;
public void RaisePostDataChangedEvent() { }
public void RaisePostBackEvent(string eventArgument)
{
this.LinkClick(this, new EventArgs());
}
public bool LoadPostData(string postDataKey, System.Collections.Specialized.NameValueCollection postCollection)
{
this.textBoxValue = postCollection[this.UniqueID];
return true;
}
protected override void Render(HtmlTextWriter writer)
{
writer.Write("<script language=\"javascript\"> function Test(){ " + myPage.ClientScript.GetPostBackEventReference(myPage, "Hello") + "}</script>");
writer.Write("<INPUT type=\"text\" name=\"" + this.UniqueID + "\" id=\"" + this.ClientID + "\" class=\"size\" value=\"\"/>");
writer.Write("<a name=\"" + this.UniqueID + "\" href=\"#null\" onclick=\"Test();return false;\">myHyperlinkText</a>");
}
}
Codebehind of the web page:
public class MyTestClass : Control, IPostBackEventHandler, IPostBackDataHandler
{
string textBoxValue;
System.Web.UI.Page myPage;
public MyTestClass(System.Web.UI.Page myPage)
{
this.myPage = myPage;
}
public event EventHandler LinkClick;
public void RaisePostDataChangedEvent() { }
public void RaisePostBackEvent(string eventArgument)
{
this.LinkClick(this, new EventArgs());
}
public bool LoadPostData(string postDataKey, System.Collections.Specialized.NameValueCollection postCollection)
{
this.textBoxValue = postCollection[this.UniqueID];
return true;
}
protected override void Render(HtmlTextWriter writer)
{
writer.Write("<script language=\"javascript\"> function Test(){ " + myPage.ClientScript.GetPostBackEventReference(myPage, "Hello") + "}</script>");
writer.Write("<INPUT type=\"text\" name=\"" + this.UniqueID + "\" id=\"" + this.ClientID + "\" class=\"size\" value=\"\"/>");
writer.Write("<a name=\"" + this.UniqueID + "\" href=\"#null\" onclick=\"Test();return false;\">myHyperlinkText</a>");
}
}
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Hi Friends,
How are you?,can anyone tell me how to write a trigger code.Kindly tell me please....
Thanks & Regards
Senthil Kumar
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senthilsstil wrote: can anyone tell me how to write a trigger code.Kindly tell me please....
Google[^] not working for you ?
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You should ask this in the SQL forum instead.
Despite everything, the person most likely to be fooling you next is yourself.
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i have my form names and user names in the database , which tells , which form pertains to which user.
Now my question is , still there is any need to utilize the autorization tag in the web.config file ?
I am authorizing the user from checking the formnames from the database .
Yesterday is a canceled check. Tomorrow is a promissory note. Today is the ready cash. USE IT.
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So what's the problem you are facing ? Already you are doing authorization from database. Then why you are worrying about the authorization tags in the web.config ?
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i wanted to confirm if i have limited users , only then i should go for the authorization concepts ? otherwise , i don;t need to worry at all .
Yesterday is a canceled check. Tomorrow is a promissory note. Today is the ready cash. USE IT.
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I think it's better to stick on the method which you are using now and working fine for you.
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hai i new to using masterpage when i use this code any of page in my website javascript code appears how to overcome this problem very urgent
<script language=javascript>function test()
{
alert(document.getElementById("editName").value));
}
</script>
but without using masterpage this code working perfectly
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sivaprakas wrote: function test()
{
alert(document.getElementById("editName").value));
}
This would work with normal pages. But in MasterPages, it is different. Even though you have given the ID as "editname" ASP.NET appends a prefix of the contentplaceholder name along with the actual name. To overcome this, you can set the JavaScript call at runtime from the CodeBehind using editname.ClientID property as parameter to the JS function rather than hardcoding it.
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Hi thanks for all reply i use
"ctl00$ContentPlaceHolder1$editName" as ID and comeout from the pbm
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sivaprakas wrote: "ctl00$ContentPlaceHolder1$editName" as ID and comeout from the pbm
Hard coding this is a bad practice. Once you changes the content place holder name, your script will stop functioning. You should use ClientId which is the correct solution.
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Hi guys i have one doubt,
First i installed vs2005 now i thought to install vs2003 also in that,
If i install low version on after adavnce version,
It will give any probs?,
And how to know i am on which version?,
Guide Me plz
Thanks & Regards,
Mageshh,
please don't forget to vote on the post
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They look different, the only issue you will have is that sln files will open in 2003 if you double click them.
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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I am sorry for stupid title, but I don't know how to name the thread.
Anyway, I am working on a web admin panel and I have a problem about object reference.
I know what this error mean, but what I don't know is why I reload some page 1000 times and I try to reload it 1001 time, and I get object reference?
Sometimes is on if (dataReader.Read()) and sometimes on if ((bool)Session["SomeText"]).
Can session be abandoned this way?
Before this if's, I have another if (in session_start in global.asax) that verifies whether session is null or not.
Does anyone have an idea what could be a problem?
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I guess if your database connection fails, you get a dataReader back that is null, and you're not checking it. And, I guess your session must be timing out. I always check if a session variable is null before I try to convert it to anything. In fact, I'd tend to wrap it in a property that does exactly that, so it's written once and used every time.
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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I've added check if connection is opened, but unfortunately, I have to wait to see if error comes again  , but I definitely have to change some things in my code.
Your session property sounds great. I have to implement that.
Thank you Christian and best regards.
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I want to load an image into an image control on page postback
the images in the folder are loaded in a listbox then when the user clicks onteh image it loads inthe listbox, but the image nerver loads..
Plz help
This is my code
Partial Class Photos
Inherits System.Web.UI.Page
Dim imageString As String
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
Dim ImageFolder As String = Server.MapPath("~\Images\Photos\")
Dim dir As New IO.DirectoryInfo(ImageFolder)
Dim fifo As IO.FileInfo
For Each fifo In dir.GetFiles
ListBox1.Items.Add(fifo.Name.ToString)
Next
End If
If Page.IsPostBack Then
Image2.ImageUrl = Server.MapPath("~\Images\Photos\" + imageString)
End If
End Sub
Protected Sub ListBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
imageString = ListBox1.SelectedItem.Value.ToString
aspxlab.Text = imageString
End Sub
End Class
phatkin
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It will load, you just need to click a few times. Your problem ( as you'd notice if you set some breakpoints to try to debug your code ) is that page_load occurs BEFORE your events fire. You need to set the imageURl inside your event, or in the prerender event, which fires after click events.
And, please tell me you are not writing a project with a control called ListBox1.
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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hahahaha no not a projetc with a listbox called listbox1.
anyway am trying it our several times
thank you
phatkin
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Hi dear.
my question from host admin :
((((
I recieve this error in my site :
Exception Details: System.Web.HttpException: Validation of viewstate MAC failed. If this application
is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same
validationKey and validation algorithm. AutoGenerate cannot be used in a cluster
I recieved this error in some different situation. this site worked in another host with out any
problem. I recieved this error in my onother site in your hostI think there is a
problem in web.config
}}}}
and host admin response:
(((
This is a bug of Microsoft, when you use some data controls of .net, in some case like post back
when data load not finished reading from database it will be happen.
And you can disable viewStateEncryptionMode on your web.config or your pages that issue happend,
but
it will be less safety for your data, but it is the fact, so it's up to you, or you can wait
MS
to fix it.
)))
I dont know what can I do now. how I can solve my problem.
please help
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