Is Echo <%= %> Syntax Evaluated Before The Declared Value Is Bound To The Property
Oct 29, 2010
When are declared values bound to properties of a user control in WebForms?
I have a user control which has a public property which is an enum type. In my aspx page I'm setting it's value declaratively. In the ascx I'm outputting the value to the page using <%= %> syntax. The value that is output by the echo syntax is always zero 0. The enum does nopt have a zero value.
My question therefore is, is echo <%= %> syntax evaluated before the declared value is bound to the property?
I'm going to assume that zero is the "unset" value for any enum member and therefore assume that <%= is executed before the value is bound to the property.
I have a fairly simple template that I need to make a method call from. However, NVelocity does not seem to evaluate method parameters that themselves are NVelocity variables. Take the following NVelocity template:
#if (--- CONDITION SNIPPED ---) <blockquote class="column span-4"> I MADE IT! </blockquote> #else <blockquote class="column span-4"> $extensionMethods.TestMethod(${var1}) </blockquote> #end
In the above template, $extensionMethods is passed in as an instance of a class and works wonderfully when passing in evaluated numbers (e.g. $extensionMethods.TestMethod(4) works every time). However, using $var1 causes the entire string to be returned as-is: $extensionMethods.TestMethod(${var1}).
Is there a way to pass in a variable to a method lazily to get the above template to evaluate correctly?
'Person' is not a member of type 'Transient.rowtype[(Id,Edm.Int32(Nullable=True,DefaultValue=))]' in the currently loaded schemas.
Does the EntityDataSource not support walking the relationships? How would you do this with the EntityDataSource?
Also the @userName parameter is being added in the code behind for now. Extra points for anyone who knows how to specify a username parameter directly in the WhereParameters collection.
I'm currently using a GridView and I want to set the CssClass for the Row depending on a property of the object that the row is being bound to.I tried the following:
<asp:GridView id="searchResultsGrid" runat="server" AllowPaging="true" PageSize="20" AutoGenerateColumns="false"> <!-- The following line doesn't work because apparently "Code blocks aren't allowed in this context --> <RowStyle CssClass="<%#IIF(DataBinder.Eval(Container.DataItem,"NeedsAttention","red","") %> <Columns> <!--............--> </Columns> </asp:GridView>
Now I could simply handle theGridView's RowDataBound event and change the css class of the row there...but I'm trying to keep a clear separation between the UI and the page/business logic layers.
In an ASP.NET 3.5 VB web app, I successfully manage to cache an object containing several personal details such as name, address, etc. One of the items is CreditNum which I'd like to change in the cache on the fly. Is there a way to access this directly in the cache or do I have to destroy and rebuild the whole object just to change the value of objMemberDetails.CreditNum?The cache is set using:
Public Shared Sub CacheSet(ByVal key As String, ByVal value As Object) Dim userID As String = HttpContext.Current.User.Identity.Name HttpContext.Current.Cache(key & "_" & userID) = value End Sub
Then when the user clicks an Edit button I run a script that enables all the checkboxes (which works fine), and then when the user then clicks on a checkbox the tick is appearing or disappearing as it should.
The problem I'm having is that when I try to read the value of the checkbox from the codebehind:
Im using LINQ2SQL and i have an object called Article. Its has 2 properties FinishText and SwedishText. The idea is to let the user choose language. Swedish is default.
I bind the objects to a listView and there is a label that takes the swedish language. When the user presses the Finish flag button i want the objects to reload and the finish text to show instead of the swedish. The problem is that the text label is bound to the SwedishText property in the mark up like this:
I can think of some ways to solve this, and i have one that doesnt work that well. My question is, what would be a good way to solve this? Im not so experienced so i know that there are lots of you out there that know how to do this much better.
Another problem i dont like my solution to is when i have an object that has a association with my Article object, like ArticleCategory. The ArticleCategoryId of my Article is, lets say 31, which is corresponds to the category "Movies". I dont want to display the category id but rather the name of the category itself (Movies).
So this is what i do: <%#GetCategoryNameFromId(DataBinder.Eval(Container.DataItem, "Article_Id"))%>
I call a method that recreates the artice object and from there creates the ArticleCategory and gets the name from it. Its a horrible solution cause it involves lots of trips to the Database. Especially since i do similar things with other properties.
Just wanted to hear what is a proper and good way to deal with these common but for me new tasks.
var MyDC = new MyModel.MyDataContext(); var MyValues = from p in MyDC.Patio where p.LoginID == loginId select p;
Let's say that I have a second variable: MyCurrentTable which could be equal to: Patio, Furniture, Warehouse, Company, etc. depending on the table being used at any given time
From there, how can I get to a kind more generic kind of construction, like this one (for sure I know that the syntax I am using is not ok
var MyValues = from p in ({0}.{1}, MyDC, MyCurrentTable) where p.LoginID == loginId select p;
Where MyCurrentTable could be: any table at any given time, having this piece of code to work in a recyclable way, valid for any table.
when I loaded the page, the numbers come fine, but the links are not evaluated well: Instead of linking to Vacancies.aspx?VID=170 for example, the link comes this way: [URL]
How can I call a public property declared on a ASPX page from a different ASPX Page? Is that possible? It is a website project. How can I get/call this property from a different aspx page? I have attempted this from the other page, but it is not recognizing the partial class: private Test_Default _test; It does not recognize the "Test_Default"
I'm having problem in inserting text from a textbox in which user write or copy some text which may contain special characters ( " , . ) etc. If there is any special character it get conflict with CommandText Syntax and generates error in inserting. I want to insert all these characters. How could i do it?
For reporting we used report RDLCs and displayed using an ASPX form. We implemented using the route as shown below. This resulted in forcing us to use the page route below and also to use the hyperlink instead of the normal Action Link. The question is how do we convert the asp:hyperlink ASPX syntax to Razor syntax.
I am trying to tie the Visible property of two textbox controls in a gridview to the value of a property. One I want to be visible is the property is true and one I want to be visible is the property is false. I have not been able to figure out how to express this. I have tried the following, with the non-working line in red.:
[Code]....
The "Not IsInEditMode" does not work as desired. The property code in the VB code behind is:
[Code]....
What is the proper way to code the Visible= property?
I am working with a sql server database with about 50 stored procedures. The database and stored procedureswere not created by me. The stored procedures all begin with a number in their name.
Example: 17P_Comsetter
The problem I am having is that if I try and execute the stored procedure at the command line in Query Analyzer,the query analyzer appears not to like that the stored procedure begins with a number. For example:
If I try an run the stored procedure as follows:
EXEC 17P_Comsetter
Then I get the following error message:
Msg 102, ..... Incorrect Syntax near '17'
I am using SQL server 2005. Does anyone know why I am getting this error message?
DataRow[] filterRows = ds.Tables[0].Select("Running Status= case State when 'True' then 'Running' When 'False' Then 'Stoped' end Where Active='1' and State='1'");
this is not working showing syntax error syntax error:operand is missing
I get the above error while compiling and the name is in my .aspx file while i try to assign it in my .vb file like this IN .aspx file:
<tr> <td class="txtarialsml">SEC Fee</td> <td> <asp:TextBox runat="server" ID="txtsec" Width="150px" BorderColor="Silver" BorderStyle="Solid" BorderWidth="1px" ReadOnly="true" CssClass="txtverdlink" Height="18px"></asp:TextBox></td> </tr> <tr> <td class="txtarialsml">CSCS Fee</td> <td> <asp:TextBox runat="server" ID="txtcscs" Width="150px" BorderColor="Silver" BorderStyle="Solid" BorderWidth="1px" ReadOnly="true" CssClass="txtverdlink" Height="18px"></asp:TextBox></td> </tr> <tr> <td class="txtarialsml">NSE Fee</td> <td> <asp:TextBox runat="server" ID="txtnse" Width="150px" BorderColor="Silver" BorderStyle="Solid" BorderWidth="1px" ReadOnly="true" CssClass="txtverdlink" Height="18px"></asp:TextBox></td> </tr> In .VB file Protected Sub drpstock_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles drpstock.SelectedIndexChanged Try txtsec.Text = "" txtnse.Text() = "" txtcscs.Text() = "" Catch ex As Exception Session("errorcode") = "blabla" Session("errordesc") = "This exception occurred while trying to fetch data." Response.Redirect("../errorpage.aspx") End Try End Sub Public Sub dg_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Dim row As DataGridItem = e.Item lblData.Text = "in subprocedure" If row.ItemType = ListItemType.Item OrElse row.ItemType = ListItemType.AlternatingItem Then Dim day As DateTime = Convert.ToDateTime(DirectCast(row.DataItem, DataRowView)("day").ToString()) Dim tempMonth As Integer = day.Month Dim lblMonth As Label = DirectCast(row.Cells(0).FindControl("lblMonth"), Label) If row.ItemIndex = 0 Then UpdateLabel(lblMonth, day) End If If currMonth <> tempMonth Then 'add blank row currMonth = tempMonth j += 1 AddRow(row.ItemIndex + j) UpdateLabel(lblMonth, day) End If End If End Sub
I know I have to be missing something simple, but yes, it's stumped me. I've read a couple posts that are similar, but didn't correct my issue. This seems too easy, so here's my situation. I have a Login.aspx (using VB). Here's my (partial) code for this page:
[Code]....
Then in the Login.aspx.vb, I'm getting the error as stated in this posts subject line:
At a bit of a loss here. As the subject says, I have a repeater control that uses the variable xmlN which is declared in my Sub Page_Load. Posted code below.
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: BC30451: Name 'txtUser' is not declared.
