Web Forms :: How To Write Controls In Codebehind
Dec 13, 2010
need to write radio button list with its items for each record table : qtext , a1 , a2 ,a3 ,a4qtest :display question texta1 - a4 :answers to choose between themi wrote this code but its only display it as html wont process it
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Similar Messages:
Mar 25, 2010
I'm interested to hear from other developers their opinion on an approach that I typically take. I have a web application, asp.net 2.0, c#.
What I usually do to write out drop downs, tables, input controls, etc. is in the code behind use StringBuilder and write out something like sb.Append("
I don't find myself using to many .net controls as I typically write out the html in the code behind. When I want to use jQuery or call JavaScript I just put that function call in my sb.Append tag like sb.Append("td...onblur='fnCallJS()'.
I've gotten pretty comfortable with this approach. For data access I use EntitySpaces.
I'm just kind of curious if this sort of approach is horribly wrong, ok depending on the context, good, time to learn 3.0, etc. I'm interested in learning and was just looking for some input.
Edit
After reading the comments here it sounds like I should take a look at MVC. I've not done that yet. The only hesitancy in doing so is that the existing project is just that, existing. There is a lot of code already done the way I explained and it is hard to imagine what would be involved in changing it, advantages of doing so, and just learning what that would take.
The other thing I'm taking away from the comments is that my code behind should really not include much of the sb.Append code, whereas now it is filled with it in numerous functions. To me it is not messy but that is because I know what each function does and can look at it and see, oh that writes out x, y, and z.
It's not uncommon for me to just have a div on the .aspx part and then build up the .innerHtml of that with the StringBuilder in the code behind.
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Nov 12, 2010
i have this string:
string foo = "<p>temp</p>";
how can i show it on my page without using Response.Write(foo)
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Jun 8, 2010
i want to know, if is better to make an entire page in the aspx file or in the aspx.vb file...
if you have to decide, which one do you choose?
ie in aspx:
HTML Code:
[code]....
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Jun 8, 2010
i want to know, if is better to make an entire page in the aspx file or in the aspx.vb file. If you have to decide, which one do you choose? ie in aspx:
Code:
<asp:Table ID="Table1" runat="server" Width="980">
<asp:TableRow>
<asp:TableCell>
SOME TEXT
</asp:TableCell>
</asp:TableRow>
</asp:Table>
ie in aspx.vb:
Code:
dim tabla as new table
tabla.id = "Table1"
tabla.width = 980
dim fila as new tablerow
dim celda as new tablecell
celda.text = "SOME TEXT"
fila.cells.add(celda)
tabla.rows.add(fila)
form1.controls.add(tabla)
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Mar 29, 2011
I am reading in a file into a string. Then I am writing this string to a stream. I know this code works fine.
The only problem that I have is with the line that write the data in chunks where the parameters is not supported for the Write method.
The line that has the problem is this line. What do I need to change here?
OutPut.Write(buffer, 0, Math.Min(to_write, WRITE_CHUNK));
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Apr 16, 2010
i hav created different rolegroups such as candidate,content developer etc... i hav put datalist views in different rolegroups i want to access those datalist view's controls in codebehind how do i do it? my code behind is in vb.....the code .aspx :
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code behind is wat i want for OnClick="TestCheck" so tat whn i click on tat link i cn verify whether candidate has given the test or not...rght nw i cnt access datalist1 in code behind..
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Jan 12, 2011
What is the earliest time that a control can be focused on without causing an exception/server error? It seems that newly-created (in codebehind) controls cannot be focused on until they're added to the page (or another container on the page), but I'd like to confirm and make sure.
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Apr 22, 2010
I know I can use a code like this:
[Code]....
To create a DIV in my body but how do I then add innerHTML to this control? Or can I directly add an Label to the newly created control and set tag ones text?
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Dec 6, 2010
I am working with UserControl file that is mypage.ascx and mypage.ascx.vb files.mypage.ascx page consist two text boxes named 'username' and 'password' and i am wishing to use these text boxes in its code behind file that is in mypage.ascx.vb. Here my codes goes:-
[Code]....
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Aug 2, 2010
I have a Subscriber form defined on Webserver1, http://localhost/validation/Subscription. In this form there is a textbox - FirstName and some hidden controls I have a Services webform defined on Webserver2,http://localhost/Number/Services. I load the content of page "Subscriber.aspx" from Webform 1 to webpage Services.aspx on Webserver2.
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Nov 20, 2010
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The users insert a number in the TextBox1 (eg. 5).In the Button1_Click funciont the code insert in the panel dinamically the RadionButtonList.Then the user select one of the 5 Items of the RadioButtonList, and click on the (created dinamically) Button "ReadChoice"
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Nov 17, 2010
search for a item, display the results in a datagrid, have a LinkButton (per item in the datagrid) to show a popup modal and insert this data to a new table. I have the search, the datagrid, and popup modal all working. I need help with the add button in the popup modal (which insert into a new table in the db). In my datagrid im using DataFields - how would I get access to this in the codebehind so I dont have to re-query the db again for the ID that i'm trying to insert?
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Jan 19, 2011
I have gridview and sqlDataSource. In edit mode, if the user checks closed checkbox closeDate parameter is set to today and appears in a label near to checkbox. So, I need to control isClosed checkbox and then if it is true closeDate=GETDATE()
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Only CloseDate parameter need to be set in codebehind, other parameters handled in gridview.
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Jul 12, 2010
I have multiple questions about doing gridview in code behind.I used this code to fill my gridview at runtime.
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My questions are:1. How to edit the column headers? When I bind the database to my gridview, obviously, the column headers of the database will be binded. For example "First_Name", I want to edit the column so I can omit the underscore.2. How to edit the column width?
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Mar 29, 2010
Given the following code for a textbox in the EditItemTemplate of ListView:
TextBox txt = (TextBox)ListView.EditItem.FindControl("ImageURLTextBox");
How would we code for a textbox in the ItemTemplate of the same ListView?
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Apr 27, 2010
I have a DDL bound to a sqldatasource where the dataTextName is the storeName (varchar) and the dataValueField is the storeID (PK Int). I'm holding the value of the storeID in a user's profile (using ASP.NET membership profile). So, when a user is created, they're assigned to a store (or not...it's optional). When I edit the user, I populate the DDL with all the stores in the table, but I need to set the selected item to the storeID in the profile (if it exists)...I'm not sure at what point to do it though. In my codebehind, I bind the ddl to the datasource and insert an additional item: if not page.ispostback then
REM: bind the company ddl
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Feb 16, 2010
i saw this post on[URL] so the problem is .... if there is a datasource in some editeitem template in grid view .... it won't be accessible from out of the edit-item field.....
here's my code...
[Code]....
that i have here is ID-column which contains a linqdatasource taking a where parameter from a dropdownlist and they are both in the same edit-template field.
and i have in another column (CourseTypeID-column ... edit-item template) a dropdownlist ..... now this dropdownlist i want to bind it to the linqdatasource exists in the ID-column (edit-item template)..... is that possible in the designer (or from) not code behind ..... and how ????
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Feb 3, 2010
I am getting error when i write the belwo code in the code behind.
Error: The name DataIem Does not exist in the context
protected void getHotDeals()
{
D4T.tbDealDataTable dealTable;
dealTable = dealTA.HotDeals();
StringBuilder sb = new StringBuilder();
[Code]....
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Mar 15, 2010
I hve this gridview
v style="overflow: auto; height: 250px">
<asp:UpdatePanel UpdateMode="Conditional" ID="up1" runat="server">
<ContentTemplate>
<asp:GridView ID="gv" runat="server" DataKeyNames="row_id" AllowSorting="True" AutoGenerateColumns="false">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkDelivery" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Sequence No">
<ItemTemplate>
<%# Container.DataItemIndex + 1 %>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
i want to add this two columns dynamically to gridvew in codebehind.
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Nov 24, 2010
Is there a way to turn this
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[Code]....
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Jan 30, 2010
I am trying to access accessing a control in a Formview. I have tried several methods, but nothing seems to work
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Nov 23, 2010
Is there a way to show/hide (visible = true/false) a textbox and/or dropdownlist at PageLoad (or other Page cycle) from codebehind (I would like to check for some permission regarding current user and show/hide some controls from aspx page) ?
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Jan 6, 2010
In the gridview we are using edit button. Once the edit button click Controls in the edit template will display in the same row with update button. That row has two dropdownlist control.
Process flow:
controls:d1 and d2
d1 is using sqldatasource for item display : working fine.
d2 is using codebehind code to load the item based on the selected value in the d1 : Not working
How to findthe control in the edit template to display item value for d2.
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May 28, 2010
I'm trying to pass in an ID of an activity (RefNum) to my codebehind via OnDataBound called in the CheckBoxList, but can't seem to find the correct syntax.
I know I'm supposed to use parentheses when passing parameters to subroutines and methods, and I've tried a number of ways and keep receiving the following error:
BC30203: Identifier expected.
So I tried to hard-code it in the code below [ OnDataBound="FillSectorCBList("""WK.002""")" ], but it's obviously wrong. :(
Front-end:
[Code]....
Code-Behind:
[Code]....
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