Asp.net - Correct Way To Not Use Eval In A Repeater And Improve Performance?

May 31, 2012

I have a repeater which takes 270 seconds to render and actually ends up crashing all browsers. The SQL to retrieve the data takes about 10 seconds. I wanted to remove the Eval's to see if that speeds up things a bit, but I am having trouble with the correct syntax. I have doubts that this would actually improve performance as I am dealing with 150,000 records. Would a GridView or other control be faster? Would using LINQ to SQL improve performance? Here is the code for the Eval:

[Code]...

ADVERTISEMENT

Should Use View To Improve Performance

Mar 9, 2010

i'm developing vb.net application. There are 10 ways of transactions. I want to produce 'Purchase register report'. For that I want to find what amount of effect has been made by each transaction on ledgers of 'Purchase account'. Purchase account has almost 30 ledgers. And transactions can produce about 10000 rows in database for a year. Now if I produce month wise report for a year, there will be 10000*30=300000 row scanning which makes it very slow in execution.

How To Improve Performance Of App By Error Catching

Mar 7, 2009

I'm trying to improve my app with some error catching. I have a module that downloads a file from the Internet to a local folder. At the moment, if the local folder doesn't exist, it just crashes here:

strLocalFile = New FileStream(pPath, FileMode.Create, FileAccess.Write, FileShare.None)
with error:
System.IO.DirectoryNotFoundException was unhandled
Message="Could not find a part of the path 'C:Documents and SettingsSimonDesktop estdownload.zip'."
Source="mscorlib"

How can I do something with that error and stop my app from crashing? Ideally, have a messagebox show saying 'directory not found' or similar.

How To Improve Reading Performance From A Datatable

Oct 25, 2010

i have a datatable with about 10000 rows and few columns (4)I have noticed that the process of reading a big table its quite slow..is there a way to improve performance in reading a datatable?

View 15 Replies

Improve Performance Of A Windows Forms Application?

Apr 10, 2009

How can I improve the performance of a Windows Forms application?

Improve Performance Of Contact Fetching Using EWS Managed API?

Jul 30, 2010

improve performance of Contact fetching using EWS managed API?

Improve The Performance Of A Windows Forms Application?

Jan 18, 2012

How can I improve the performance of a Windows Forms application?

Does Making COM Files 'embedded Resources' Improve Performance

Jun 25, 2009

If I took a COM object (specifically Excel 2003 workbook) and made it an embedded resource of my executable, would that improve the notoriously slow .NET-COM interop at all?

Improve Paged Gridview Performance : Huge Underlying Dataset?

Jul 1, 2010

I'm currently working with a gridview that has a huge underlying dataset.I'm almost certain that I saw something about a new facility in Visual Studio 2010/.NET 4, which would improve the performance (e.g. doesn't download all the data on databind, but rather only what data required for current page). My guess would be that it was using AJAX.I didn't need it at the time I saw it, and now I can't find it, even though I've been hunting online for a while.

Improve The Performance Of Reading Data From Excel And Writing To Datatable?

May 21, 2011

I want to import data from excel and move that to Datatable in VB.NET 2008. I wrote and working but its taking too long time.. for 1500 records its taking 4.40 min.

[Code]...

Equivalent .net Eval Function For Vbscript Eval?

Jan 31, 2011

I want to execute the code that is passed as a string to my function, the code will be passed at runtime. This is an example code that may be passed as a string to my function. p is a dataset, which is declared and has some values, this code is executed in a asp.net page

p.Tables(0).Rows(0)("disp_status") = "Approved by CEO";
p.Tables(0).Rows(0)("status") = "Approved";
Session("fnc") = "generate po";

[Code]...

Asp.net - Access A Gridview Inside A Repeater Which Is Inside A Repeater (Nested Repeater)?

Apr 11, 2012

How can I access rep_DataSimilarToBacthid ? I need to bind the GridView and call GridView RowDataBound or InitializeRow

[Code]...

I am using VB.Net with Framework Version 2.0.

Asp.net - Nested Repeater Show Data That Matches Parent Repeater

Mar 15, 2011

I am using a repeater to build a custom table. However, I can't figure out how to make the table show subtotal if the next rows tour does not match the previous rows.

Something similar to that.

row1 tour1
row2 tour 1
tour1 subtotal

[Code].....

but this shows all the data in the nested repeater not the ones that match the parentrepeater fields for example tour,theme,dep7 should match in the child repeater

Rebind Repeater Using Next / Previous Buttons In The ItemTemplate Of The Same Repeater?

Mar 27, 2009

I have a parent repeater with nested repeaters.My problem is I am trying to use 'Next' and 'Previous' buttons to rebind my repeater (rptTabContent) and thus the inner repeaters also, but when I try to manipulate the state of these links during the ItemCommand event they are overwritten by the bind.

C# - Set Eval In Code Behind?

Dec 24, 2011

This is my .aspx page code: -

<asp:Button ID="btnProcess" runat="server" Text="Place" OnClick="btnProcess_Click"
CommandArgument='<%# Eval("intId") & "~" & Eval("IdECompleted") & "~" & Eval("dtECompletion") & "~" & Eval("strName") & " " & Eval("strCode") & " " & [code]....

I want to use it like below but gets error: -

Private Sub Grd_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles Grd.RowDataBound
If Session("poweradmin") = True Then[code].....

Get Eval To Work In .NET?

Dec 8, 2011

I only want to show the credit card info section if the Eval expression evaluates to true, but it gives me and error saying I can only use it in the context of a databinding control, I know I have to put the #, but vb then says that I must use If() or IIF(). What is the correct syntax.

[Code]...

C# - Binding Eval With An ImageURL In ASP.NET

Jul 16, 2009

I'm trying to bind an image using Eval() with VB.NET and ASP.NET, but am running into issues:

Code snippet

<bri:ThumbViewer Id="Th1" runat="server"
ImageUrl='<%# Eval("Name", "~/SiteImages/ram/3/{0}") %>'
Height="100px"

[Code].....

Doing Math Like Eval In Javascript?

Sep 20, 2009

Is there any way to parse a string in vb.net (like, built in methods), that can do math like Eval can? For example, 3+(7/3.5) as a string would return 2.

I am not asking for you to code this for me, I just want to know if there is a built in way to do this, if there is not I will code it myself.

I can wager that it would not be able to parse stuff like Sin(90) on its own, and I understand that would need to be replaced by Math.Sin(90).

VS 2010 Eval Unescape In VB?

May 30, 2011

Ok so if you look at the markup of this page: [URL]

You'll see that it uses eval and unescape to make it look like this in it's markup "%73%65%6c%66%2e%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%6c and so on...."

I'm trying to make a program using httpwebrequest that will grab this long string off the website using regex then decode this and put it in a textbox. I know how to accomplish the first two parts how I could decode this in VB.

Use Eval In Codebehind To Set Page.Title?

Mar 1, 2010

I have a SQLDataSource that is bound to a ListView control but I want to place parts of the bound record into the HTML TITLE attribute. Here is my codebehind file that I want to change so it can use Eval to construct a dynamic TITLE based on the data content[code]...

Using Eval With Sum() And Count() With EntityFramework And ListView?

Dec 30, 2010

I am working on my first project with the Entity Framework and am having some difficulty displaying advanced information with the EntityDataSource and a ListView.

For example, given the two entities:
Item
Name

[code].....

[2008] Eval Type Functionality?

Feb 8, 2009

I've written a piece of software which extracts information from the web and stores it all to a local SQL Server database which all works well. However, I now want to add additional functionality where any user can go in and create a template which would be run when every synch has complete which would save as an HTML file. I've set up whole thing. Information is stored in a backend XML file which is processed when the synch completes. However, I want this information to check delimeters in the string and process it as code.

Find A Repeater That Is Within Another Repeater?

Feb 7, 2012

Ok so my issue is I have three repeaters. Within that repeater I have another repeater and a third one in the second. There is more in between but that's not relevant. Below the HTML is my VB code. My issue is that rptCrashPercentageAvg reutrns Nothing. How can rptCrashStatsDisplay access rptCrashPercentageAvg?

<asp:Repeater ID="rptCrashStatsDisplay" runat="server">
<ItemTemplate>
<asp:Repeater ID="rptCrashPercentage" runat="server">

[code].....

Save The Returning Value Of Eval Function In A Variable?

Jul 31, 2010

can i save the returning value of eval function in a variable and use it wherever i want? i can call it just in <asp: .... tags. i can't use them in vb methods. is it possible?

Fast Math Expression Evaluator (eval Function)

Mar 16, 2004

I need to execute scripted text formulas. I believe that in VB 6 and/or VBA there was a method EVAL() that did the job, eg: [Code] As it seems, such a method does not exist in VB.NET. [url] The method works fine but due to its comprehensive layout its not that fast (as i need to call it myriad of times) Does anyone have a SIMPLE, FAST, straight forward math expression method? Or anyone knows how to use the old EVAL method in VB.NET?

View 10 Replies

Asp.net - Databinding Methods Such As Eval(), XPath(), And Bind() Can Only Be Used In The Context Of A Databound Control?

Apr 21, 2012

<%If (Eval("NewPrice")) =0 Then%>
<% Session("OrigenalPrice") = True%>
<asp:Label ID="Pricelabel" runat="server" Text='<%# Eval("Price") %>' />
<%Else%>

[code].....

Is It Correct To Correct Properties Values On The Fly

May 15, 2010

Is it correct to correct properties values on the fly? for example: (note the .ToLower)

Public Property X() As String
Get
Return _x.ToLower
End Get

[code]....

Connect To SQL DB Receive The Code And Then Check If That Code Is Correct And If Its Correct Download Silence The Pro File?

Jun 8, 2010

i'm working on a system that upgrades a basic version to a proversion but i have a payment gateway . it generates a code in an SQL DB.now i have a form in VB that has a textbox and a button how can i let VB connect to my SQL DB receive the code and then check if that code is correct and if its correct download silence the pro file. from an url.

VS 2005 Getting The Correct Number Of Attributes To Match The Correct Number Of Text Boxes?

Apr 18, 2009

I have created a basic query generator which allows a user to select the Select, WHERE and criteria attributes using a number of checkboxes.However i have got stuck. In the results form i have the following code

Private Sub DisplayRecord()
RichTextBox1.Text = ds.Tables("newResults").Rows(intCurrentRecord).Item(0)
RichTextBox2.Text = ds.Tables("newResults").Rows(intCurrentRecord).Item(1)
RichTextBox3.Text = ds.Tables("newResults").Rows(intCurrentRecord).Item(2)

[code]....

The program keeps on crashing if the user does not select the corresponding amount of display records from above for the amount of attributes they want for the SELECT part of the query in the intreface in form 1.

How would i go about making something where the number of SELECT attributes selected which are listed in a string create the correct number of textbox fields in the results form (form2)

How To Improve My Coding

May 28, 2011

Whenever i work on form, so i use this code

CODE:

Now i have 2 things to ask?

1) is this right way which i use?

2) I use the same on every form regardless on number of forms? is it fine to use it on every form?

Copyrights 2005-15 www.BigResource.com, All rights reserved