To Reach A Variable From A Different Code-block Expression Than The Block Where The Variable Was Declared ?
Oct 25, 2010
I have 2 separate code-block asp.Net expressions in an aspx markup, with an html content between (span element in the example below). In the first code-block, there is "i" as an increment variable for the for loop.Then the code-block is cut with an html content.And another code-block expression is opened but as I see I can reach the "i" variable which was declared in the previous code-block.
So, how asp.net handles -compiles- the pieces of code-block experrions declared in the mark up? Does it check the semi-colons and generates some anonymous methods which will end up with many calls to Response.Write in the last place?
<p>
<%for (int i = 0; i < 30; i++)
{
[code]....
View 2 Replies
Similar Messages:
Jul 16, 2010
I'm am not quite sure why I am getting this error.
Dim numUsers as Integer
Using myConnection as New System.Data.SqlClient.SqlConnection("Data Source=(local);InitialCatalog=dbtest;Integrated Security=True")
Dim queryString As String = "SELECT COUNT(*) AS Num_Of_User FROM tblusers WHERE username=@username AND password=@password"
Using myCommand as New System.Data.SqlClient.SqlCommand(queryString, myConnection)
myConnection.Open
myCommand.Parameters.AddWithValue("@username", requestName)
myCommand.Parameters.AddWithValue("@password", requestPass)
numUsers = myCommand.ExecuteScalar()
End Using
End Using
This error occurs on the first using statment.
View 1 Replies
May 14, 2010
have a look at this simple code snippet
[Code]....
Here second declaration of x gives error that "variable 'x' hides a variable in an enclosing block. I wonder why this error is not given for second 'i' variable declared in second for loop?
Since i am declaring second x in a separate for block, why this error is given for variable second x ?
View 4 Replies
Oct 20, 2010
Nested GridView Control returns "Object variable or With block variable not set" when outer GridView returns rows.
The Nested GridView Control works as long as the outer GridView returns rows, the following code works: [Code]....
Object variable or With block variable not set.
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.NullReferenceException: Object variable or With block variable not set.
Source Error:
Line 118: If e.Row.RowType = DataControlRowType.DataRow Then
Line 119: Dim myStatus_ID As SqlDataSource = CType(e.Row.FindControl("sqlDeviceStatusAssign"), SqlDataSource)
Line 120: If Not e.Row.DataItem("Status_ID") Is Nothing Then
Line 121: myStatus_ID.SelectParameters(0).DefaultValue = e.Row.DataItem("Status_ID")
Line 122: End If
I have tried checking for IsDbNull and checking to see if a label exists in a given row. This code *If Not e.Row.DataItem("Status_ID") Is Nothing Then* appears to do nothing.Same with the following:
*Dim localLblItemReference As Label = CType(e.Row.FindControl("lblItemReference"), Label)
*If Not localLblItemReference Is Nothing Then
******************************************************************************************
To further clarify my question above, I am looking for a method to detect e.Row.DataItem("Status_ID") is nothing/null due to the outer GridView returning 0 results in a query.I have a (Outer) GridView Control with another GridView Control inside of a template field with it's associated SqlDataSource control.
In the "Protected Sub GridViewReport_RowCreated", I provide the Select Parameter for the associated SqlDataSource with the DataItem row value.When the (Outer) GridView Control does not return any rows, the "e.Row.DataItem("Status_ID")" throws a:
Exception Details: System.NullReferenceException: Object variable or With block variable not set.
View 3 Replies
Jan 3, 2011
I am using three listviews on a page ... the first is always populated ... the other two are sometimes populated I want to total amounts and counts from all three ... so I set up steps in the DataBound events works great when all three listviews are populated the error "Object Variable or With block variable not set." occurs when LV2 or LV3 is not populated I've tried testing DataItem ... Is Nothing but get the failure on the If test instead
View 3 Replies
Jan 3, 2011
If ((intCustomerCount Mod intColumns = 0) And (intCustomerCount > intColumns)) Or (intCustomerCount = intColumns) Then
View 3 Replies
Apr 1, 2010
I was wondering, if I create a page e.g. index.aspx and I create it's contents based on a variable, would an AdSense block always show the same ad? Meaning is there a way to give it a dynamic content and having the ad addept to the content without creating a page for each content.For example I have a site with 3 links: pears, apples and lemons. I have a database which has the content of each page. I have a dynamic page index.aspx which modifies it's content based on the clicked link (the link always returns to index.aspx). If I want an ad to match my content, should I then do it differently? Like creating pages for each link and adding the content to each page dynamicly based on the link or something?
View 1 Replies
Jan 29, 2011
I have menu item on my master page that has block around the text when the page is first run. I wrote in the css on the link and visited property to change the color to match the image color that it is on. When a menu item is clicked the color changes to the right color. How do I get it to the right color on when the page first opens or is there a way to get rid of the block or make it transperant?
View 1 Replies
Apr 9, 2010
In .NET is it possible to get the HttpContext of the current page from within an external class?
So, for example in my page test1.aspx codebehind I've got:
Dim blah As New FeedWriter()
blah.Run()
But inside FeedWriter.vb, can I get the HttpContext of test1.aspx? Or would I have to pass it in to Run()? (I'm unwilling to do the latter because FeedWriter implements an interface which will need to be re-written if it's to take arguments)
View 1 Replies
Jan 27, 2011
I have a question about C Sharp ASP.NET:Is there a difference (in code speed, resources) between:public static variable declared in public static class MyGlobals in a 'Code File' template;and the variable declared in a normal 'Class File' template;I use this variable in 2 different Class Files and also in _Default Page codebehind cs file.In fact in my case I need about 20 global variables of type List<string>.
View 9 Replies
Feb 22, 2010
Given the following simplified code block in ASP.NET
<% foreach( item in Model) { %>
<%=item.OriginalText.OriginalText1 %>
<%} %>
OriginalText is a class which may be null. I am looking for a simple (clean) way to check for this null and return an empty string ("") instead.
View 6 Replies
Apr 1, 2010
I know how to impersonate a user for the entire site but how best to impersonate for a block of code; WindowsImpersonationContext or NetworkCredential?
And how would this code look like?
View 2 Replies
Feb 13, 2010
Basically what i am trying to do is display a list of categories. And if the admin is logged in
i want to show some buttons next to each category. For example a button to delete it. The problem is that i dont know how to pass a parameter to the function that does the action.Like i specify that on button click the function 'DeleteCat' must be called but if i cant pass the ID of the category to be deleted this wont work.I know this can be done with commands and a repeater, but its not an option, i cant use a repeater.So apparanly this is what i am aiming for:
[code]...
View 1 Replies
Dec 22, 2010
I tried two cases: (here a is a variable declared in .cs file)
1. <form id="form1" runat="server"> //generates 10 as output
<div>
<%=a %>
</div>
</form>
2. <form id="form1" runat="server"> //generates nothing
<div>
<%#a %>
</div>
</form>
C# file
public partial class Default : System.Web.UI.Page
{
protected int a;
protected void Page_Load(object sender, EventArgs e)
{
a = 10;
}
}
View 3 Replies
Mar 23, 2010
I have an extension method which I can use from the .cs codebehind of an aspx page, but if I try to do it in a code block in the aspx, it can't find the extension method. Is there something I need to add to the page?
View 2 Replies
Dec 7, 2010
In my code i am running an exe file through a process call. How to handle exception generated by the exe file.
View 1 Replies
Aug 4, 2010
I have the need to fire off a modal pop-up inline. I have a modal panel defined, and works when I click a test button on the page. Unfortunately I need it to work like this:
1.) A user clicks a 'Save' button
2.) In the code block for that button's Click event, there is a check for a certain constraint.
3.) If that constraint exists, I need to show the modal pop up and determine if the following code in the Click event is executed based off of the return of that modal pop up.
Easily accomplished using a Forms message box. But this is an ASP.net app. What I've tried so far is creating a button that uses a style with "display: none" and programmatically firing off that hidden button's click event. Unfortunately the code does execute but no modal pop up is displayed and the code continues to execute.
View 4 Replies
Oct 22, 2010
I am trying to call a JavaScript function from my ascx control code behind in the catch blockI have tried the below two ways but they don't seem to work.
Page.ClientScript.RegisterClientScriptBlock(typeof(string), "script", "test();", true);
ScriptManager.RegisterStartupScript(Page, GetType(), "err_msg", "alert('error');", true);
View 3 Replies
Jul 27, 2012
l Im downloading Pdfs using WebClient I used below code
try {
WebClient wc = new WebClient();
Uri uriadd = new Uri(@"ftp://xxx.yyy..../httpdocs/FH/Foldername/" + clientorder1[i].Cloi_id + ".pdf");
wc.Credentials = new NetworkCredential("xxxx", "zzzz");
}
Its working fineĀ but some times Gives Error like Object synchronization method was called from an unsynchronized block of code.. Why this Error coming ....
View 1 Replies
Aug 4, 2010
Im using enterprise Manager data access code block and have a table in sql server 2005 with a column type of 'bigint'
when querying against this table and adding in a parameter, there isnt a long datatype available, so is Int32 an equivalent ?
[Code].....
View 1 Replies
Dec 14, 2010
i am dynamically validating regular expression in which the regular expression are from database ok so the thing is happening that is replaced by \ which is not validating the email i have Regex RegExp = new Regex("@" + IsMandatoryTextTextAreaFiles.vcr_RegularExpression, RegexOptions.Compiled); in which IsMandatoryTextTextAreaFiles.vcr_RegularExpression=w+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)* .
View 1 Replies
Nov 4, 2010
[code]...
How do I correctly define my boolean expression? I've been looking, but haven't found the right syntax.
View 4 Replies
Jan 6, 2011
I am trying to write a stored procedure that takes out a list of blog entries from a table (tblFeedEntry) as well as the amount of comments that each blog entry has gotten (tblFeedComments) but all I can get is the total amount of comments of all blog entries together, displayed on all entries. This is how my code looks today:
[Code]....
I am guessing that the problem is that the declared variable is not picking up the id of the blog entries, instead it picks up everything. The original select and the select in the declared variable are not connected. How do I connect them?
View 3 Replies
Feb 12, 2011
I have the master page code behind like this:
public partial class TheMasterPage : System.Web.UI.MasterPage
{
string test = null;
protected void Page_Init(object sender, EventArgs e)
{}
}
When I'm in the Page_Load function in the code behind of the content page, I don't see the variable test as being available. Am I declaring it wrong?
View 2 Replies
Dec 9, 2010
can we grab a global variable or Session or View State variable in the javascript or using jquery?
View 2 Replies