DataSource Controls :: Querying SQL Database?
Jan 10, 2010
I have an SQL database which I wish to query, I have the queries set out and working using the SQLDataSource Control.Is there any way of using web methods to query an SQL Database.I realize this may not be ideal when the SQLDataSource control offers such functionality but it is for a piece of college work and I am not entirely sure which way they want it to work, as all it says is to "Implement a client application and a set of web services".
So is it possibile to use a WebMethod to perform SQL based queries or queries which are not SQL based and if so how do you go about creating them?
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Mar 23, 2010
I have a database which contain job ads/ I have one table "dbo.tbl_jobadvert" which contains the ad itself and another table "dbo.tbl_jobFiles" which contains the path of the documents uploaded in relations to the job advert ( application form, job description, etc )
[Code]....
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Jul 2, 2010
I'm using Visual Web Developer 2010 Express with SQL server 2008 Express and I'm wondering if it is possible to query the database from within a VB subroutine located within pagename.aspx.vb, rather than just using the asp databound controls on the main page ?
I want to do something like this in the page load routine:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim username As String
username = GetUserName() 'calls function to get current username
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Assign the retuned data to a label: lblFirstName.Text
End Sub
Is it possible ?
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Feb 12, 2010
With the gridview I can create a template field to query across associations but I don't see how its possible to do that with the listview (?). I tried to create associations in the eval fields
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[Code]....
<b>Title:</b> <%# Eval("Title") %>
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Mar 15, 2010
I'm hoping someone can point me in the right direction. I will be as detailed as I can in explaining the issue;I have a dataset I have instantiated in a class file (vb.net), and fill the data succesfully. That data is then dumped into an excel file. What I need to do is to go through all the data in the dataset, and directly update the database, changing a "status" column from "pending" to "processing" based on the store number. As I am new to datasets (relatively speaking, of course), I am not quite certain how to accomplish this task. Below is the code I have so far:
[Code]....
If anyone could provide sample code to use, or could provide a quick bit of code I could just copy and paste in and test,
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Jan 10, 2011
I'm trying to create a search page that searchs one specific table in the entrie datbase.Basically someone writes what they want in a textbox in search.aspx, they click the search button, and it takes them to another page called search_results.aspx, carrying the inputted text along with it. What search results is supposed to do is at page load, its supposed to query the entire database for all values that are LIKE the text in the querystring, then transport the entire value set of each row that has a field matchign the query string, and then it's supposed take those values and put them in a template that presents them in the way that I want.
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SELECT Column1, Column2
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Mar 9, 2010
I am trying to use Linq to Entities with the Linq.Dynamic library (via Scott Guthrie) and I'm having some strange issues with querying dates.
[Code]....
This return no results, when it definitely should...
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Mar 2, 2010
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Mar 2, 2010
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Jan 22, 2010
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May 10, 2010
I have some data which is in mySQL, i am not familier with mySQL, i would like to transfer all the data from MySQL to SQL Server database,
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May 30, 2010
i would like to ask about how to sync data from client sybase database import to our sql server database regularly(set time to sync everyday) by create a file in our sql server database
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May 10, 2010
I have a development database and one in production. There are two different sets of data in each database. On my dev system, I have mostly dummy data that I test with and in production is the real data for my web application. I recently added a new feature to the app that required a new table, and a new field for a foreign key in an existing table. I now need to upload that new structure to the production database without overwriting the live data with my test data.
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Jun 7, 2010
I have created a sdf database in a mobile application.Now I want to synchronize that database to a sql server database.
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May 13, 2010
I have the following code for the SelectedIndexChanged event of a drop down list. This works fine as it is but this entity has a relationship to another entity (Genre). if i change the select statement to { m, m.Genre.MovieGenre }).ToList(); it doesnt work as contains anonomyous types.
[code].....
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Jul 1, 2010
I am trying to get my code working as per the instruction on [URL]
Public Delegate Function PredicateWrapperDelegate(Of T, A)(ByVal item As T, ByVal argument As A) As Boolean
Public Class PredicateWrapper(Of T, A)
Private _argument As A
Private _wrapperDelegate As PredicateWrapperDelegate(Of T, A)
Public Sub New(ByVal argument As A, _
ByVal wrapperDelegate As PredicateWrapperDelegate(Of T, A))
_argument = argument
_wrapperDelegate = wrapperDelegate
End Sub
Private Function InnerPredicate(ByVal item As T) As Boolean
Return _wrapperDelegate(item, _argument)
End Function
Public Shared Widening Operator CType( _
ByVal wrapper As PredicateWrapper(Of T, A)) _
As Predicate(Of T)
Return New Predicate(Of T)(AddressOf wrapper.InnerPredicate)
End Operator
End Class
Then I have the function which I have modified to use my department id variable (did)
Function DidMatch(ByVal item As ListDataItem, ByVal did As Integer) As Boolean
Return item.AssigneddepartmentID.Equals(did)
End Function
Then I try to call it from my code:
Dim children As List(Of String) = toplevel.FindAll(New PredicateWrapper(Of Integer, Integer)(Did, AddressOf DidMatch))
I then get an error on DidMatch ... Error Method 'Public Function DidMatch(item As DeptMenuData, did As Integer) As Boolean' does not have a signature compatible with delegate 'Delegate Function PredicateWrapperDelegate(Of Integer, Integer)(item As Integer, argument As Integer) As Boolean'.
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May 3, 2010
I have developed a data querying application for the Web, this is in a host. What steps should I take if I want this application can also be used with mobile devices.
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Mar 8, 2011
I have this table in SQL that I'm trying to do some comparison work with Ok, onto the schema. It's like this:
[Code]....
Now, what I want to do is query my database in this manner:Display any records that conflict only Non-priority conflict based on: priority based on the time of day
[Code]....
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Dec 5, 2010
I am writing an ASP.NET application that suppose to connect to many different data stores and query them for data. Each data store contains different data: it can be an SQL DB, an XML file, or anything that can store data. The result is always an XML.
The remote data stores expose a WCF service (which I will also implement) that will allow me to query the data store and return the results.
My question is: how exactly should I implement the querying mechanism? Should I define my own query language?
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Mar 16, 2011
I have to check usergroups of LDAP Active Directory for a specific user in C#. Mean I pass this username to a method and it returns me list of group from that user belongs. Im Searching alot But Everytime get new error.
LDAP Path: 192.168.1.4
Domain Name: Arslan
UserName: ArslanP
Password: testad
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Feb 5, 2011
I have a quick question about best practices and especially expected performance for the following scenario:
If I want to query data from multiple servers that contain schematically identital sql databases, would having each server provide a web method that a single client application can consume be an appropriate (and relatively fast) solution?
The data just needs to be consolidated on the client end, where several web methods would have to be consumed serially (or in parallel?) to provide the data to the client. Each server would also be implementing Entity Framework as an ORM.
Performance is my main concern here, would it turn out excessively slow as we start to scale up to more and more servers?
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Jun 5, 2010
First off, I am just getting started with ASP.NET so I expect this is something that I am doing.
i am trying to make a connection to a MS SQL database on my local machine.
I have the following in web.config
[code]....
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Jun 16, 2010
when I make restore to backup database display this error :
The backup set holds a backup of a database other than the existing 'elib' database. (Microsoft.SqlServer.Smo)
how I can solve this error ?
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Feb 8, 2010
This is a very common error as evidenced but the very large number of problems and suggested solutions on the web. I finally got around it last week but can't remember what was the step that did it. At that time, I was building a web application rather than a web site. Is that the difference? As you can see, it is no longer in the APP_DATA folder and is named membership.mdf rather than aspnetdb.mdf. I ran aspnet_regsql.exe to create it and actually had it working and was updating it successfully. But for other reasons, I had to scrap the application and decided to re-create it from scratch as a web site rather than a web application. I had been using Visual Studio 2008 to build the web application but am now using Visual Web Developer 2008 Express Edition to build the web site. Unfortunately, the Visual Studio application will no longer open so I can't verify that the web application still works. Can anybody help? (Please!!!) BTW, ASPNET and NETWORK SERVICE both have full control over the membership.mdf.
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Apr 5, 2010
I have the following mapping for my table in MySql:
<class name="Tag, namespace" table="tags" >
<id name="id" type="Int32" unsaved-value="0">
<generator class="native"></generator>
</id>
[Code]....
As you see the record_dates property is defined as a component field of type DateMetaDate. Both created_at and updated_at fields in 'tags' table are updated via triggers. Thus I can insert a new record like such:
var newTag = new Tag()
{
name = "some string here"
}
Int32 id = (Int32)Session.Save(tag);
Session.Flush();
ITag t = Session.Get<Tag>(id);
ViewData["xxx"] = t.name; // -----> not null
ViewData["xxx"] = t.record_dates.created_at; // -----> is null
However when querying the same record back immediately after it was inserted the record_dates field ends up null even though in the table those fields have got values.
why the Session.Get ignores getting everything back from the table? is it because it caches the newly created record for which the records_dates is null? If so how can it be told to ignore the cached version?
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