Dim cmd As New SqlCommand
cmd.Connection = New SqlConnection(<connectionString here>)
cmd.Connection.Open()
cmd.CommandText = "Select * From table_name"
Dim da As New SqlDataAdapter(cmd.CommandText, cmd.Connection)
Dim ds As New DataSet
da.Fill(ds) ' I want to do some query with THIS dataset
cmd.Connection.Close()
I want to do a query based on the dataset ds. Let's say I want to filter out names that starts with "a". If yes, how do you do it?
How can i query a dataset? I got a dataset from a query "select * from customers", now i want to query the dataset and get the customer name where id = "156".
i am using sp_helptext to retrieve a query in a dataset. the problem is, i am getting line breaks when retrieving the query in the dataset.
how to retrieve the query into dataset without the possibility of any linebreaks i.e. the query should be retrieved as it has been written by the user.
I am thinking about using a DataSet to perform some operations but I wonder if it can be used as a regular table in a query. For example, I have the following code which updates a table named "listas_pre_titulos". Is it possible to use a DataSet instead? What I need is to build a "temporary" table on the fly and use it in a regular query and I do not know if a DataSet is an option or maybe I would need to CREATE such a temporary table.
Is there a straightforward way to create a dataset after querying a dataview? The query itself returns DataRowView objects, which I cannot get to work with CopyToDataTable().
The query looks like:
Dim dvQueryView As DataViewdvQueryView = (dataview object of large dataset) detailTableQuery = From rowView As DataRowView In dvQueryView _ Order By sSortOrder _ Select rowView _ Skip nQuerySkipRow _ Take nQueryCountRows
I only want a small selection of records from the large dataview and use those to create a smaller dataset. The large dataset stays in place while multiple views are created from it, and then from those views I want to create the smaller datasets.
I have a query that, when run in SQL Server Mgmt Studio query analyzer window, completes in about 5 seconds. However, when I attach this query to a table adapter in visual studio and try to preview the data, I get an error that says:"Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding."Please note, the dataset was successfully configured using the TableAdapter Configuration Wizard, so there didn't appear to be any syntax errors with my query. Also note that I have other datasets connecting to the same database that are working as expected, so it doesn't appear that it would be an issue with the server not responding. Does anyone have thoughts on what kinds of things, other than a query taking too long to run, that could cause this specific error?
Return myDataReader I have a function which is retuning a datareader to various sections of my website which is then being bound to dropdown lists, gridviews, etc. Normally the last line in a function when is the data reader and connection getting closed? Is it best practive to return a data reader or a dataset/datatable (or something even better than these two)?
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.
I'm trying to find an easy way to view the query that has been generated as part of the LINQ to DataSet syntax in my application. I found Scott Gu's blog and his creation of the Linq to SQL Debug Visualizer but it doesn't appear to work for my application. I am using OracleClient if that is important.
My next step is to simply configure the Oracle Manager for the database to see the query but I can't believe there's not an easy way to view this generated query.
i wants to display the related informations of each record of dataset. That mean, dataset having rows for A,B,C and etc..
Then i wants to display the information in same Gridview of each record(A,B,C). i wrote the below my coding, it dispaly info of the last row of dataset only. pls correct the coding.
I'm new with programming. I have a GridView that have the specific user data. When the user log in I retrieve the data for that specific user. All I need is; How do I make the gridview get the data of the logged user using a datatable that has a query. Just bind it with the datatable.This is some code that other programmer made, I continue his work.
I've got a gridview that will allow clients to edit options they've already entered on another page. The gridview has three radio buttons in it each with a value of 1,2,3. The option value in the dataset is 1,2 or 3 respectively. I would like to have the radiobutton with the corresponding value selected in the gridview so they can see what they previously chose and will then be able to edit, if they wish.
which datatype is needed if I want to display the data 1 / 2010 and want to get query = select min (number) as number. Do I have to use a separate number and year?
Here's something I've been stuck on for some time. I used code from the ADO.NET Tutorial and tried to translate it so it applies to SQL and the database on my website. I set the Configuration Manager for Debug and so I can see a detailed error message.
I have most of the lines in the DoStuff Sub commented out right now but I get the same error message either way so it's responding to the first line below Try.
Here's the error message I see. Line 52 is : da.Fill(ds)
The table in Database1 that I'm trying to access is called Ray Rover Activation.
I have an application where I am trying to create a Content Management System for a set of newsletters. I use a SQL server to store all content, and have the connection string in the Web.Config. I use forms to allow users to enter articles and register to receive the newsletters. The app regularly generates the newsletters and emails them out. Since the processing of the newsletters does not need a form, I was considering using a class.
I am having trouble getting the datasets connected to the SQL database, and using the stored connection string. I am thinking it is something like:
Code: Imports System.Data Imports System.Data.SqlClient Public Class clsProcessNewsletters Dim strSql As String = "SELECT * FROM Users" Dim dtb As New DataTable
[Code] .....
First of all is this an appropriate approach? And if so, any pointers on cleaning up the code?
I have added a linq to sql layer in my MVC 2 application.
This is the code I am using:
using (ProductPortalDataContext ctx = new ProductPortalDataContext()) { var Title = from aps in ProductPortal.Models.AppSettingsView[code]...
It says to be unable to find a quey model for AppSettings view and then says "where not found".
Tried googling, nothing came up. Tried searching here(first two pages) and nothing that seemed relevant popped up.But the best of all, created a new ASP.NET applicatio, imported the model using Linq to SQL and it compiled!Ok, I tried adding a button and a label to the asp.net application just to see if it would work... guess what? It doesn't!Still the same error message and I have *NO* clue what's wrong with it!
I am working on a page whereby all the controls within the page get translated to another language.
This is handled within the master page prerender event and generally works fine.
However my page consists of a multiview control that is made up of 2 views. By default the INSERT formview is displayed so the user can enter form detials. This translates fine.
On clicking the save button the multiview active index is set to 1 and the EDIT formview displayed so as the user can update any of their details. This view does not get translated.
It would seem this is due to the controls not being available at this point in the page cycle or when this button event fires.
So i opted to do the translate process within the prerender event of the EDIT formview, and the method does have access to all the controls within this formview and runs after the master page prerender event. So all should be good.
However it seems that all th epage properties at this point in time are cleared. So the translation doesnt work. At the point of master page prerender i have verified they are populated with the values, but as soon as i hit the formview prerender all the page properties get cleared to nothing...
I have a dropdown list which provided input to a SQLDataSource query which is bound to a listbox. When the user changes the index of the dropdown box, I want to trigger the SQQLDataSource to requery the database, and repopulate the listbox.
I have set the autopostback = true for the dropdown box. I have also added a Response.Redirect back to the same page in the SelectedIndexChanged method, but the DataSource does not Repopulate. How to trigger the requery?
I have a array list and am using like a database trying to search for ChildID and ParentID based on certain criteria.
My example below has the following keywords to search for:
Yellow, Mustard, Honey, Orange, Flame, Talisman
I also have a category volume value which I grab the first 2 characters to determine another filter.
My code isn't returning all matches with using 'Contains'. Right now it finds the 'Orange, Flame, Talisman'/AV record and returns 50, 28. My keywords also has 'Yellow, Mustard, Honey'/AV which should return 55 and 28 as well.
HTML Code: <%@ Page Language="VB" AutoEventWireup="false" CodeFile="temp2.aspx.vb" Inherits="temp2" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server">
I have a client that provides a .xls file on their site that we have no control over that we download the file and then read it to update inventory. The first column is the SKU and in cell A2 it has the value 1028. This outputs fine but when I get to A8 the value is '1051-LV' and in my output it is blank. I am thinking in my dataset it reads A2 value and that becomes the type for the remainder of the rows. But what if that is wrong? How do I fix so it doesn't set the datetype to say int when it could be a string type?
Below is my code and works but the output of certain rows sku values are blank and are not like that in the excel file.
Code: Protected Sub btnGetExcelFile_Click(sender As Object, e As System.EventArgs) Handles btnGetExcelFile.Click litOutput.Text = "" Dim ws As New WebPost ws.URL = "http://www.domain.com/dropship/feed.xls" 'downloads excel file based on url Dim bExcel() As Byte = ws.RequestBinaryData("", True)
In my project I work with Entity Framework (LINQ to ENTITY). I only have ADO.NET Entity Data Model and a DAL (Data Access Layer). I also get the data due a WCFClientService. I have a gridview that needed to be exported in Excel.
FlexCel is a tool for generating Excel files based on a template. The only thing I see in demo's is that they work with DataSets.
Is there a way to convert the data in my gridview to a virtual DataSet?
I've written the following method to get the data:
Till now I used to design RDLC file before and assigned typed dataset table columns.Report processing mode is local. But now my stored procedure returns different columns based on condition i.e columns are not fixed every time. Now I need to add that columns to typed dataset and dataset is assigned to RDLC file. So dataset and RDLC files are create dynamically based on stored procedure result set columns.
What I am thinking is this? Is it possible for me to upload the data from an excel file to dataset of my application first, so that the user can view the data in a gridview to review it first, before the user strike the save button, to save it in the database. So, that in case there is a problem, the gridview will high light all the data with an error. So the user can easily pull out the excel and correct the data before saving it in the database.
