Instantiating A Dynamically Named Class?
Jan 21, 2010
I have a C# web page that allows the user to select an object from a DropDownList. Each object in the list has its own class. On the user making a selection information appears on the page that is generated from its respective class.
How do I instantiate a class depending on the users selection? I could use a switch statement that would instantiate anyone of the classes pending the dopdownlist.selecteItem value, however I was hoping to avoid that.
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Mar 19, 2010
In that i have a seperate class file(.cs). I want to instantiate that class inside the aspx.cs file. I'm able to do that if i put the class file in appcode folder but not able to do if i place the class file outside the appcode folder. kindly let me that whether is it possible to instantiate a class that resides outside the appcode folder?
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Feb 22, 2011
I hate to see the name of the class used as a string parameter like "FileDownloader" in the code, and I would like to use something like this FileDownloader.Name(), where FileDownloader is name of the class.
Only problem is that I can't find out how to do that without instantiating object or creating a static method...
Is there a way to get a class name in .net without having the object instance and without creating a static method that returns the name of the class?
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Aug 3, 2010
I have developed an asp.net web application containing 40-50 pages. I have implemented logger using Log4net and each of my pages has this in its page_load event.
[code]...
This method has many strings like "In page Load function","OrgId","Homepage.aspx?Sid=1","Page load function successfull". Now i would like to maintain these string which are common throughout my application in a seperate class file and use it with a variable...
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Feb 25, 2011
I had been building my SelectLists in the View, but I found examples doing it in code that I liked better. Now I'm creating one of my SelectLists like this:
[Code]....
And all is good, but I'm not sure how to do two things. First, I'd like to add an initial SelectListItem that prompts the user to select a value. When instantiating the SelectList in a loop this is easy, but I was hoping to keep this approach. The second problem is setting the default selected item. In the constructor it shows the 4th parameter to be used for this purpose, but I'm not certain how to do it. There's a property of this object named "DefaultView". It's a boolean, and I'd like that to determine the selected state. Is this possible?
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May 11, 2010
In looking at the constructors for the System.Drawing.Font class there is a parameter to pass in one of the FontStyles defined in the System.Drawing.FontStyle enum.
ie.
Bold
Italic
Regular
Underline
and there are boolean properties for Bold, Italic, Underline etc. in the instantiated object, but they are read only.
What if I want to define my font to have multiple styles like Bold and Underline?
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May 21, 2010
I wanna do smth like this:
[Code]....
Does anyone have a recommendation how this is archievable? I am trying to pass in the Type to the method and then create an instace of it and then access the properties in it.
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Jul 14, 2010
i have 10 classes and i want to send the class in a paramenter dynamically to call a method for example int addmember(aslogic.base obj) smilary i want to pass class in the parameter.
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Sep 7, 2010
still really new to this, so I apologize if I explain my problem poorly. I'll do my best.I used this method to add an "active" class to my main navigation on another site. Now I'm using it to change the background image for a div based on the current page.Problem is, it's not working in this case. When I view the source I just see the tag sitting sitting there like it wasn't compiled:
[Code]....
And the rest:
[Code]....
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Nov 18, 2010
I have a website built that uses master page templates. In the master page I have a simple menu in a list. This is not dynamic (yet!).
I am trying to put together some code behind to write a simple css class to one of the menu links if the Request.ServerVariables("URL") is equal to the current page URL
I have no code written because everything complains when I try to come up with something. I was thinking of doing it using a switch function but am I over complicating things?Below is the simple menu with the class I am trying to write to the link:
<div id="nav">
<ul>
<li><a class="selected" href="Default.aspx" title=""></li>
<li><a href="" title="ThisPage.aspx"></li> [code]....
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May 25, 2010
<%@ Page Language="javascript"%>'m writing a website that's a little heavy on the database connection calls, so I've decided to try to encapsulate it in a Javascript pseudo-class. When I try to instantiate the MySqlDataAdapter, I get the error "Format of the initialization string does not conform to specification starting at index 0." While I can appreciate this, I've used the same connection string (more or less) across many pages now, without issue when I'm not trying to use this class.I'm a little confused - does anyone have any idea why line would be throwing this error?
test.aspx
[Code]....
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Apr 27, 2016
I want to change the class of an object dynamically in C#
Main Class : handleOperator objOpr = new handleOperator();
Then for object objOpr I need to access the methods for another class Class2 :
Means, I want objOpr = new Class2();
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Jul 19, 2010
to change ItemStyle-CssClass of TemplateField in the code behind?The intellisense for itemstyle in C# is read-only..
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May 17, 2010
I have a aspx where i have thumbails of pictures in listview, once i click on a picture, picture shows up as big next to list view. Now what i want to do is, have a red color border around the thumbail of picture which is show big at the center. check the Picture I just want to change the CSS class of the image selected in the listview. I get to know which image id is selected through query string PageNO or if <%#Eval("PageNo") %> is =2 then second image css class should be redBorder else imgBorder1 ASPX Page
[Code]....
Code Behind:
[Code]....
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Feb 5, 2010
I have a menu generated by my cms:
<ul>
<li><a href='default.aspx?pageid=2' id='link2'>rrr</a></li>
<div runat='server' id='menu2'>
<a href='default.aspx?subpageid=8'>rrr</a>
<a href='default.aspx?subpageid=9&siteid='>rrr</a>
<a href='default.aspx?subpageid=10&siteid='>rrr</a>
<a href='default.aspx?subpageid=11&siteid='>rrr</a>
</div>
<li><a href='default.aspx?pageid=3' id='link3'>Your Services</a></li>
<li><a href='default.aspx?pageid=4' id='link4'>rrrrrr</a></li>
<div runat='server' id='menu4'><a href='default.aspx?subpageid=1'>Single Equality Scheme</a>
<a href='default.aspx?subpageid=2&siteid='>Diversity Strands</a>
<a href='default.aspx?subpageid=3&siteid='>Equality Impact Assessments</a>
<a href='default.aspx?subpageid=4&siteid='>Quality and Safety Committee</a>
</div>
<li><a href='default.aspx?pageid=9' id='link9'>Contact Us</a></li>
</ul>
I would like to change the link that has been clicked, to class="active". I would like to add a class to the div if the page above is clicked too.
If (Len(Request.QueryString("pageid")) <> 0 and Request.QueryString("pageid") = 4) Then
menu & Request.QueryString("pageid") & .Attributes.Add("class", "active")
link & Request.QueryString("pageid") & .Attributes.Add("class", "activelink")
end if
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May 6, 2010
I have a web site project in which my architecture is n layered architecture.I am using Micorsoft Enterprise library's validation dll.As of now this dll is not strongly named. I need to make that assembly strongly named. how can i do this.I saw some articles which depicts how to create strong named assembly by taking the vs 2008 command promtp and type sn -k publickey.snk, and then add the assembly tag to the assemblyinfo.cs. I tried to do that, but my website project dosen't have any assemblyinfo.cs file.
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May 7, 2012
Trying to move a project from Windows Server 2000 and IIS 6 to Winders Server 2008 and IIS 7. I am getting the following error:
Could not find permission set named 'ASP.Net'
AppPool is set to .NET 4.0. I don't see a setting in the actual application though like you had to do in IIS 6?
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Oct 5, 2010
I have a solution in Visual Studio 2008 with 3 projects. One Web Application and 2 class libraries. The entity framework model is in a class library and the start project is the web application.
I used to have this problem:
"The specified named connection is either not found in the configuration, not intended to be used with the EntityClient provider, or not valid."
I fixed it copying the connection string from the App.config of the class library where the entity model is located to the web.config of my web application (start project).
I found that workaround posted here:
[URL]
how can i avoid using the connection string from the web.config and use the one from the app.config where the entity model is located?
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Jan 5, 2011
What is the reason for opening a named pipe only once per machine? .I mean what is the reason behind this restriction?
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Oct 20, 2010
I am trying to update a column named td1 (smalldatetime) in a table
the sql query is :
Session("date") =
Date.Now
Dim sSql As
String = "update qa_segmentos set dt1 = '" & Session("date") &
"'"
looking in the autos window I read :sSql "update qa_segmentos set dt1 = '20/10/10 18:11:43'" String
The error that I get is:
The conversion of char data type to smalldatetime data type resulted in an out-of-range smalldatetime value.
The statement has been terminated.
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Jun 3, 2010
Ok...I am on my local developement machine.....my website and sql server are hosted else where. All I am trying to do is connect to my database from my visual studio 2010. I have attached the screen shot of my error. All I did was do a fresh install of windows 7 ultimate on my machine....install visual studio 2010 and go to work........and i get this error.
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Jan 19, 2011
I have a .net webapplication with the following domains:
www.domain.com
sub.domain.com
files.domain.com
When a user is logged on to domain.com or sub.domain.com, I'd like them to share session state (i.e. be logged into both domains at once). This is possible to do by setting the domain on the session coookie to be ".domain.com". However, my problem is that the domain "files.domain.com" should not have session state due to security issues (xss attacks from user-made files hosted on that domain is an issue).
Is it possible in ASP.NET to use the same asp.net session id for these two domains, but not the third one?
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Feb 22, 2010
I have a user control with a button named upload in it. The button click event looks like this:
protected void btnUpload_Click(object sender, EventArgs e)
{
// Upload the files to the server
}
On the page where the user control is present, after the user clicks on the upload button I want to perform some operation right after the button click event code is executed in the user control. How do I tap into the click event after it has completed its work?
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Sep 18, 2010
I have a project where I'm rebuilding a legacy app and need to combine multiple similar web pages onto one ASP.Net web form. I thought I could easily do this with MultiView / View groupings. The problem I'm encountering is that each View control doesn't isolate controls of the same name.For example, I wanted to do this:
<asp:View ID="view1" runat="server">
<asp:Label ID="TEXT01" runat="server" />
</asp:View>
[code]...
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May 16, 2013
In an article I have read "A web browser can be named as proxy server. As safari, chrome, mozilla".But proxy server is like a an intermediatary btween the clent and server know?
What is actually the difference between the two?
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