Web Forms :: How To Pass Variables Between Includes
Sep 1, 2010
I have been reading up on this all day, and I can't find the answer (or more likely, don't understand the answers I have found) to my problem. I am completely new ASP.NET and trying to make a trasition from Classic ASP.
In classic ASP it was possible to 'pass' variables between include files. In ASP.NET includes are very different. I'll keep this simple:
I have 'header', 'content' and 'footer' pages. The header and footer are both 'includes' in the content page.
I want to be able to pass a variable from the header to the footer. Heres a snip of my code so far:
[Code]....
[Code]....
[Code]....
However this errors crops up in the footer when run:
Compiler Error Message: BC30451: Name 'helloworld' is not declared.
So how do I make this variable available to the pages involved??
I imagine there is more than one way of doing this for many circumstances.
I have never passed along variables to a function before. I have a function here that should return true or false.
My question is, how I do this in a realtime example. How do you pass along the 4 string variables to the function and see if cbValid is true or false ?
i am still stcuk with my project and unabale to perform calculation on my edited gridview..
here is my problem :
i have fields (f1,f2,f3, f4...) pulled from my sql data base table. into a gridview.
the "f4" field value is based on some calculation done on f1, f2 & f3 field values..
1- i need to have the same calculation done when i edit and update f1, f2 & f3 on my gridview...
more complicated..
2 -my calculation are based on a javascript function ...
a- how can i pass the fields values to the JavaScript variables...perform the calculation....then reassign back the result varibale to the f4 field ?? ..then update my gridview with the new calculation..
In my example below I am trying to Bind 2 different size GoogleAds to the 2 first rows in the GridView. One Ad on each row. The ads that are inside.......
(i2 == 0) and(i2 == 1).
I need to use <%if (Counts < 2) %> in HTML to restrict it to just 2 Rows, so this variable needs to be passed correctly also. As it is now, Counts is not passed correctly so <%if (Counts < 5) %> needs to be set in order to see any ads at all. I beleive this is because Page.DataBind() is binding the last ad in memory from the loop.
So when running this code, the same ad (i2== 2) is set to 3 rows in the GridView. This is my problem!
Is it possible to postback to the server, perform a function, and then continue that postback on to an external place? (ie, to a payment system)(the scenario is clicking a button to place an order, mark it as sent, then send them off to the payment page (there are form variables that needs to be sent to the payment screen as well))
In asp.net mvc3, I've got a few local variables in one of the controller, is there any neat way to pass all these variables to view? Something like "locals()" in python?
I have a gridview and in it is code to display an image
[Code]....
This works fine for pass one variable. but I need to send two variables 'ImageNum' and 'refID' to the Handler.ashx page, any ideas how, tried a few things in last few hours and as yet no joy!
We are in the process of refactoring from cf to .net, so, I am working on the Login page and converting it from cf to .net. So, when I am autheticated and enter into our website, I need to redirect it to a cfm page (just temporary, since we will be refactoring that also eventually).
So, I am autheticated (using CustomMembership Provider model for sql server) and then when I redirect to the cfm, the app.cfm should validate the .net session variables. Here is where i am stuck:
I have the .net session variables in the aspx side:something like Session["UserId"].ToString() = Value from a login txt box (also authenticated against data in the database)
Session["UserName"].ToString() = Value from the db corresponding to the User Name entered in the text box.
So, now I have all the session variables in the .net side. Now, how do I retreive these .net session in the cf side? Any small peice of code to retrive the asp.net session variable in the application.cfm side would be great.
I have this code in javascript: var x = e.mapX; It gets the X-coordinate of a map. What I want to do is that I want to store this into a c# variable. I have a class named Test with an integer property X. I want to store var x into X. In the codebehind, I have this on the Page_Load: Test test = new Test(); Then I am trying this on the javascript code: var x = e.mapX;
I have Gridview1 that brings up the columns Resorts, Seasons, Seasons_ID, Resorts_ID, and User_ID
The three ID's are all foreign keys from related tables, and they are together a combined primary key of the table being accessed (they were defined that way to prevent duplicate entries for any User/Resort/Season combination).
Now the problem: I want to use the selected row from that gridview in the WHERE clause of a SQLDatasource by setting the WHERE clause up like:
WHERE (([Resort_ID] = @Resort_ID) AND ([Season_ID] = @Season_ID) AND ([User_ID] = @User_ID)) , with the parameters each coming from statements like
Gridview1.SelectedValue
When I select a row in the Gridview, I get the following error:
Operand type clash: uniqueidentifier is incompatible with int
I am pretty sure this has to do with the User_ID being in the WHERE clause.
So I have tried something like this to access the selected index:
Gridview1.DataKeys(Gridview1.SelectedIndex).Value
This does not work, as it seems to return only the first key (of three) in the DataKeyNames list.
So the question: How can I use the SelectedIndex of that gridview for such a purpose when the key contains a UserID?
I am trying to create a quesry that will grant me access to 3 entities that are related. Here is the SQL of what I am looking for.
[Code]....
to do this, I create the following LINQ
[Code]....
How the relationship is following
.1 to * - CLAIM_REF to RESERVE_LINE_REF .1 to * - RESERVE_LINE_REF to FIN_TRAN_REF
There is no direct association between CLAIM_REF and FIN_TRAN_REF, they are only associated through RESERVE_LINE_REF What is the proper LINQ Query to mimic the SQL statement above?
i am trying to collect 2 variables from one hyperlink, and use those variables in the page_load to set as session. but i don't know how to collect those 2 variables
i would like to collect '#FF0000','#FFE4E1' or direct set '#FF0000','#FFE4E1' to string then send to pageload, how can i do this by only clicking on it ?
I want to send an email that has a machine readable part you cut and paste into an asp.net page and you get the information. I have stored all the information in an object and then used an XMLSerizer to create some xml. It all worked fine until I added some Images as byte[] to the object. If I dump the resulting string to disk then I can recreate the object fine but after it appears in the email client and I try to cut and paste it it never works. Clearly there are non standard characters coming out that email clients don't like.
Is there some encoding I could apply to my XML that would make it display correctly in an email client? Then I could cut, paste, decode and deserilize to get my object back.
im trying to make a course profile page that includes course syllabus, etc. im using querystring to get course id. i can upload course files to course folder like an instructor but i can't list and download the files in that directory.
This works when the platform target for ClassLibrary1 is set at x86. However, when I set this to x64 I get the following error when I run web application starts (it compiles just fine): Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: Could not load file or assembly 'ClassLibrary1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. An attempt was made to load a program with an incorrect format.
Does this mean that a HttpHandler can be compiled at x86 only?That doesn't make much sense to me.Does anyone have an idea of what could be going on?Edit 1:The ClassLibrary1 project is just an empty class library project with a single HttpHandler added (which is also empty).Edit 2:I am also getting these warning messages when compiling, I am pretty sure they have something to do with this problem: Assembly generation -- Referenced assembly 'mscorlib.dll' targets a different processor HttpTestEdit 3:I manually edited the project file to force references to the x64 assemblies, like this:
I am loading .aspx and .ascx files as StreamReader.
I want each file to register it's javascript and stylesheet dependencies in some declaration like a <%@ ClientDependency path="~/Scripts/jquery-1.4.1.min.js" %>.
Is there an existing convention for doing such a thing? I don't need an implementation, but I don't want to create a new syntax if there is already a way to do it.
Also, what are the guidelines for custom <%@ blocks in ASP.NET?
Compile and Publish Site - but i want to be able to update .HTM includes? I have a few pages that have JQUERY sliders and every onces in a while the client wants to update IMAGES, i thought it would be easy if i could access the .HTM file update code instead of doing a recompile! is this even possible? or am i doing it complety wrong?
I have a FormView which contains a table and a TextBox:
<TR> <td>CastomerName:</td>
<td>[code]....
and it works good.I changed the code to have a possibility for changing the row visibility. So, I added the row ID and runat="server". Changes are bolded:
After the runat="server" has been added to the <TR> then Bind() does not work. It reads the field value properly but writes NULL value. So, Bind() does not work or works bad. I tested the following:
1. When runat="server" is removed, than Bind() works good. The text from TextBox control is written to the database as expected.
2. When runat="server" is set and I set a default value in the ObjectDataSource - the default value is written to the database, so it means that path form ObjectDataSource works good and it means that text from TextBoxControl is not pased to the ObjectDataSource.
3. When runat="server" is set then text from TextBox.Text is never written to the database, instead null value is written.
