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Hi all,
I am a beginer in .net and i hav to implement a chat program [ web application, not standalone] and i have implemented public chat, but in private chat if a user send a mesage to another, i wanna pop up a window in the second user's computer [ like all other chat servers]. How can i invoke a remote object from server [ to pop up a window in client system from web server ]?
please advice.
Thanks to all.
Ali
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Server send messages to client?In C/S system there maybe some solutions use socket.
But in web applications there is no way to achieve this.
For a substitute,you can use ajax to post some request periodly for check is there are new messages.If ajax request find new message,then get it and show it in a pop up window.
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yes thats what i want, but i cannot inject a javasript to the page to opo up a window if there is a message, i get an exception [which is shown in an alert window ] and i searched for the solution and what i got is to avoid this response.write part from ajax related part. any way to pop up a window? it can be easly done if there is no ajax code.
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Use window.setInterval to watch if there is a new message.I mean the ajax is you use a Msxml2.XmlHTTP ActiveX object to post some request and get response from it.All of these operations are in javascript.;P;P;P Don't use Ajax.dll or other dll please !
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I have a GridView that contains a few Template Columns. In one of my Template Columns I have a Button and a TextBox. When the user Clicks the button, I want to place a value into the TextBox next to it. In order to do that, I figured I could get the RowIndex of the GridView row containing the clicked Button. Then I could find the particular TextBox Control in that row and fill that TextBox with the value I wish.
How can I get the RowIndex from a GridView when a user Clicks a Button within in….on the Server Side.
Any help would be appreciated! Thanks
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Hi,
You can achieve this as following.
Create an event handler for a buttonclick event in the code behind.
protected void Bttn_Click(object sender, EventArgs e)
{
Button bttn = (Button)sender;
GridViewRow gr = (GridViewRow)(bttn.Parent.Parent);
Response.Write(gr.RowIndex);
}
and assign its name to the onClick event of teh button inside the TemplatedColumn in the gridview.
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="buttn" runat="server" Text="Click" OnClick="Bttn_Click"/>
</ItemTemplate>
</asp:TemplateField>
This way you can get the RowIndex of the GridRow Containting the button and then you can find the textbox from that row using FindControl Method.
I hope this will help you.
Thanks and Regards,
Chetan Ranpariya
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Hi all
I have problem some body show for me ???
I have file demo.exe, this file use to Export for me some format file. If Export file I have to command Run “run -> cmd and cd to the forder contain file demo.exe after that writer command Ex: demo -f myshp -h myserver -u apguser -P apgpassword mygisdb
"select * from province WHERE id IN(1,2,3,4,67,34) “ so this demo exprort file for me”
But I want export with my Page (asp.net). How can I do it ???
I am developing application by asp.net (2.0)
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Hi,
I have a web config file
configuration>
<system.web>
<customerrors mode="Off">
<authentication mode="Forms">
<forms name="AuthCookie" path="/"
="" loginurl="login.aspx" protection="All" timeout="30">
<credentials passwordformat="Clear">
<user name="jeff" password="test">
<user name="mike" password="test">
<authorization>
<deny users="?">
<compilation debug="true">
But in web config file you are using some data for user name and password but what I need pass a database in which I stored usernames and passwords. I have no idea how can I check weather users and passwords matches with columns UserName and Password in my table. Table name is tbUsers.
I have connection String
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Solution is for .net 2.0
Add these lines to the web.config
<authentication mode="Forms">
<forms name="AuthCookie" path="/" loginUrl="login.aspx" protection="All" timeout="30" defaultUrl="test2.aspx">
</forms>
</authentication>
<authorization>
<deny users="?"/>
</authorization>
the authorization is used to prevent the anonymous user. in this example my default url is text2.aspx page
In login page write the following code in the button click event
if (ValidateUser())
{
FormsAuthentication.RedirectFromLoginPage(txtuserName.Text, false);
}
ValidateUser() is user-defined function where you will write the code to check whether the password given my user matches with the password available in the database.
In other page's nothing is needing to write for validation
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Hi,
I am getting the below exception when i am trying to sort my webpage or select nextpage in my application.Here is the error details.Need help urgently.
The state information is invalid for this page and might be corrupted.
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.Web.HttpException: The state information is invalid for this page and might be corrupted.
Source Error:
[No relevant source lines]
Source File: c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\va.admin\ae19a4a9\2ea09e75\App_Web_jb2ohxsj.10.cs Line: 0
Stack Trace:
[SerializationException: The constructor to deserialize an object of type 'Ext.Javascript.JSObject' was not found.]
System.Runtime.Serialization.ObjectManager.GetConstructor(Type t, Type[] ctorParams) +2320401
System.Runtime.Serialization.ObjectManager.CompleteISerializableObject(Object obj, SerializationInfo info, StreamingContext context) +99
[SerializationException: The constructor to deserialize an object of type 'Ext.Javascript.JSObject' was not found.]
System.Runtime.Serialization.ObjectManager.CompleteISerializableObject(Object obj, SerializationInfo info, StreamingContext context) +239
System.Runtime.Serialization.ObjectManager.FixupSpecialObject(ObjectHolder holder) +44
System.Runtime.Serialization.ObjectManager.DoFixups() +167
System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage) +203
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage) +190
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream) +12
System.Web.UI.ObjectStateFormatter.DeserializeValue(SerializerBinaryReader reader) +1713
System.Web.UI.ObjectStateFormatter.DeserializeValue(SerializerBinaryReader reader) +384
System.Web.UI.ObjectStateFormatter.DeserializeValue(SerializerBinaryReader reader) +198
System.Web.UI.ObjectStateFormatter.DeserializeValue(SerializerBinaryReader reader) +384
Srikanth Pothineni
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hi,
i'm new to programming(ASP.NET), but i tried to launch 1 site i.e www.bhatiarocks.somee.com, but every time its gives me msg "Directory Listing Denied,This Virtual Directory does not allow contents to be listed."
as i told u i'm new to language, so do send me any suggestion in very laymen language.
Thanks in advance
ashish bhatia(er.ashishbhatia@gmail.com)
Ashish Bhatia
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YOu shoud give the site a default page!
Open iis manager and find your site,then right click and find the document tab,set it!:->:->
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I really appreciate if you help me. I have the following rtequriements for Login page. Here I don’t know how to encrypt the password that matches the encrypted password in database and how to sets security cookie.
I really appreciate for your help.
Login Page
Purpose Authenticates User credentials(username/Password) and grants or denies access to the system
Inputs IPaddress, Username, Password, Click on Login button
Processing Make sure User is from an authorized host(IP) address. Verify that User’s Username exist and that the password(encrypted before comparison) matches the encrypted password in database. Sets security cookie (encrypted Userid)on Successful login
output Random web page or URL if the IP address is invalid.After three failed attempts prompt User to notify Administrator. After Successful login , send User to the welcome page.
I have the following table in database which has user name and Password.
UserName Password
1 jbarrera jb
2 nbawa nb
3 testread346567 testrrtyhrttrr
4 testedit test
5 goofy disney
6 mickey disney
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Use
System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(strPassword,"md5"); or
System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(strPassword,"sha1");
to encrypt the password.I don't know how to sets security cookie. 
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Hi everyone ,is there an easy way to create a button to export my dynamic data into a word Doc?
or pdf ?
Thanks
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Hope this and this can help you.
-------------------------
Listen up! Teamwork means staying out of my way! (Seifer, Final Fantasy 8).
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Has anyone had any trouble with concatenation with the new 2.0 framework. Here is the scenerio. We are migrating our site from 1.1 to 2.0 and I am working out some bugs and found this to really funny.
UnitStr += sdr("UnitID")
UnitStr is defined a string and sdr("UnitID") is pulled from the database as an integer. In the 1.1 framework(VS2003) it allows it to conncatenate but the 2.0(VS2005) it gives me a "input string is invalid", "Conversion from string "" to type 'Double' is not valid.". The funny thing it shows as an integer in the table and when you watch the variable.
Any one have any ideas?
Keep putting the pieces of the puzze together. Thats a programmer!@
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try using &= instead of +=
--------------------------------------------------
Play Nation States and join The Code Project region with the password: byalmightybob
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I'd say not to use EITHER....look for String concatenation memory c# in google.
The suggestion is to use the StringBuilder class....
"Now I guess I'll sit back and watch people misinterpret what I just said......"
Christian Graus At The Soapbox
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Yeah. Good call.
--------------------------------------------------
Play Nation States and join The Code Project region with the password: byalmightybob
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I want to generate pdf from the htmlstream.I have a third party tool pdfconverter which takes the html stream and generate the pdf.I want to capture the current webpage request and take its html stream and pass it to the pdfconverter so that the page as it is can be converted to the pdf.I am using VS 2005.Any help is appreciated.
Nirmala
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In the page load event try:
Request.InputStream.
Ben
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Here is my code
Stream receiveStream = Request.InputStream;
PdfConverter pdfConverter = new PdfConverter();
pdfConverter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
pdfConverter.PdfDocumentOptions.PdfPageOrientation = PDFPageOrientation.Portrait;
pdfConverter.PdfDocumentOptions.PdfCompressionLevel = PdfCompressionLevel.Normal;
pdfConverter.PdfDocumentOptions.UseMetafileFormat = true;
pdfConverter.PdfDocumentOptions.ShowFooter = false;
pdfConverter.PdfDocumentOptions.ShowHeader = false;
pdfConverter.LicenseFilePath = Server.MapPath(@"~/Bin");
byte[] downloadBytes = pdfConverter.GetPdfBytesFromHtmlStream(receiveStream, Encoding.UTF8);
System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
response.Clear();
response.AddHeader("Content-Type", "binary/octet-stream");
response.AddHeader("Content-Disposition", "attachment; filename=" + "Rendered.pdf" + "; size=" + downloadBytes.Length.ToString());
response.Flush();
response.BinaryWrite(downloadBytes);
response.Flush();
response.End();
I am getting this error
Message = "Could not get the HTML file from the string. A generic error occurred in GDI+.."
if I use the uri to create the request and get the stream and pass it to the pdfconverter
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
request.Credentials = CredentialCache.DefaultCredentials;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream receiveStream = response.GetResponseStream();
byte[] downloadBytes = pdfConverter.GetPdfBytesFromHtmlStream(receiveStream, Encoding.UTF8);
It works fine but not when I pass the HttpRequest Page.Request inputstream.Could anyone please correct me and help resolve this.
Thanks
Nirmala
Nirmala
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I try to loop through the controls in the page and to identify certain controls, but I can't locate them.
Here is my code:
Protected Sub submitBtn_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles submitBtn.Click
Dim errMsg As String = ""
For Each ctrl As Control In Me.Controls
If TypeOf ctrl Is TextBox Then
errMsg &= "Found it!"
Else
errMsg &= "Nothing Found!"
End If
msgText.Text = errMsg
Next
End Sub
When I trace the ctrl as String output I get ASP.masterpage_master
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