C# - Filling Dataset With Thousands Of Records?
Mar 15, 2011
I am using oracle as back end. In database there is a table with 5000 records and 160 columns. i want to display all these records in gridview(in asp.net, c#). But it takes more than 10 minutes to fill the dataset.
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Oct 5, 2010
I am using Linq to Sql as my ORM and I have a list of Ids (up to a few thousand) passed into my retriever method, and with that list I want to grab all User records that correspond to those unique Ids. To clarify, imagine I have something like this:
List<IUser> GetUsersForListOfIds(List<int> ids)
{
using (var db = new UserDataContext(_connectionString))
{
var results = (from user in db.UserDtos [code]....
Essentially that gets translated into sql as select * from dbo.Users where userId in ([comma delimmited list of Ids])I'm looking for a more efficient way of doing this. The problem is the in clause in sql seems to take too long (over 30 seconds).
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Dec 21, 2010
I have a detailsview, template as follows:
[Code]....
Codebehind: creating dataset, getting data from sql with adaptor and filling into dataset object, then setting detailsview's datasource.
I add 2 button to above template to able to edit data at asp page, and added event handlers:buttons:
[Code]....
My question is, what to do inside the detailsview update event function to able to edit and update data. My method can be wrong too.
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Apr 30, 2010
I am trying to fetch a column value from a datasource when some value is selected from a dropdownlist on its change event.
[Code]....
Here I want to fetch any other column's value that is not binded to a ddlCityName from sqldatasource.
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May 9, 2012
I am new to asp.net and I'm trying to build my first web page, but when I try to fill a dataset at the page load event I get an error: object reference not set to instance of object. I've done this many times in vb.net. I can't figure out how to step through my code like I do when I'm creating a desktop app, so I don't know exactly where it's failing. I like to be able to see the values of things as it goes through the code.
Code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Label2.Visible = False
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dsCheckExisting.Clear()
Dim adLookup As New OleDb.OleDbDataAdapter
adLookup.SelectCommand = New OleDb.OleDbCommand
[code]...
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Sep 25, 2010
I m working on ASP.net2.0 I m facing an error like "Object reference Not set to an instance" while filling dataset wht will b the Solution for this error?
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Apr 27, 2016
I have created a crystal report using dataset(.xsd) in asp.net,c#. It is working fine on local machines and my local machine IIS. on my local machine windows7 is installed. When I uploading it on on windows 8 IIS then data is not coming. Dataset is not filling on windows8 IIS.
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Jan 22, 2011
I am getting the error Method 500 while filling 3092 cities in to cascading dropdown control. i am using the following code.
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="HotelDestination.asmx" />
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</asp:ScriptManager>
[code]...
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Jan 11, 2011
I'm trying to DataBind a DataSet to a GridView in VB but I need to remove certain records from the DataSet that have the ID present in another table.
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[Code]....
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Jan 7, 2011
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Aug 27, 2010
I have 2 tables in SqlServer 2008.
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Now when i try to Update Sql Database T1id in Table2 remains 0 and not the value of T1id in Table1.
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Mar 26, 2010
I have a situation where i have a dataset with many, many rows but few columns (5). Lets say in one row i have A,B then somewhere else in the dataset i could have another row that has B,A. What i want to do is if A,B exists then remove the row where B,A exists.
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Jun 8, 2010
how to retrieve all records of dataset for calculation with each record? with sample coding.
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May 21, 2010
i have one dataset ds1 which have say 5 cols. (eg id,name,marks,age,sex)
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Apr 29, 2010
I am using dataset which contains some records I want to query with dataset to get every time next 20 records. I don't want to do it throught loop is there any way that I can get next 20 records everytime.
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May 7, 2015
Aspx code:
MembershipUser m_user = Membership.GetUser();
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dt.Columns.Add("RcvUser");
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[Code] ....
I am calling "Application object" from above aspx page into web service page as below:
[WebMethod(EnableSession = true)]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
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[Code] ....
I want to know that the approach im using in Web service page to fetch top 5 messages from Datatable is correct or not? How to do that without using LINQ as I am using framework 2.0 ...
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Sep 3, 2010
I dont know why my GridView.DataSource is become nothing when the Page.IsPostBack = true.What i did is bind the dataset to the GridView.DataSource when page load. Then when the button click event is trigger i need to get all the records from GridView. But when i debug and check i found that the GridView.DataSource is become nothing. how should i get all records from the GridView and assign to dataset. I'm using VB.net to work on.
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Mar 25, 2010
I have an xml file with this structure:
[Code]....
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Apr 2, 2010
Does dataset store all its datatables' records into server memory if I just call one datatable from it?Lets make an example, a dataset with three datatables - tbCompany, tbCompanyStaffs, tbSalesOrderwhere tbCompany is the parent of tbCompanyStaffs. tbSalesOrder is an independant table.Does dataset load all tbCompanyStaffs records into the server memory as well when a class retrive data from tbCompany?
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Aug 30, 2010
I've got a integer with a value of 100000 So if i do:
int i = 100000;
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Jun 20, 2010
I'm trying to format a data bound value as below, but I keep getting a space as the thousands separator, i.e. the displayed text is always "12 340.00" when it should be "12,340.00".
What am I missing?
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May 26, 2010
I want to retrive thousands of record from the database. Please tell me the the most efficient way to do this. I am using sql server. I want to bind A gridview with these records please let me know the most efficient way to do this so that the loading time for the page is reduced
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Jan 20, 2010
MSCharts is displaying a period (.) instead of a comma as a thousands separator on my y-axis despite my culture settings in web.config being set to "en-AU". How can I fix/debug this?
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Mar 7, 2011
I am trying to design my logic to do this but I want to create a dataSet which will have records from several databases, The records all have the same layout.
I am reagin the connection string paths from a table in a database.
I am asking for your help in trying figure out my logic.
Should I use the connectionString builder in conjunction with a loop to Connect, read a record into a dataset Until therer are no more records to be read from my databse table with the database name/paths tables ?
Here is my beginning code which deals with one database:
[Code]....
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Nov 24, 2010
After insert a grid or any other tool into an aspx page it generates enough code for that tool(for ex.): <dx:ASPxGridView ID=ASPxGridView1 runat="server"></dx:ASPxGridView>...
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How can I reduce the code, maybe there is a property(settings) in DevExpress option...
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