Databases :: How To Fill A Dataset From Multiple Foxpro Database
Aug 6, 2010
Well I Am Working On A Client Project Who Was Earlier Using A Software Developed On Foxpro database And Now I Am Developing Advanced Reporting Based On Same Data Of Existing Database
I Am Prohibited To Create New Database, I Have To Use Existing Database Now Problem is That There Is A Report Which Require data from multiple database
database are related Like This
Database (a) 1 Column is Common in Common In Database (b)
database(b) 1 column is common in database (c)
like that
what i am doing is that, I First Filled A Dataset With Required Value Then I loped This Dataset Row For Value On Which I Have To Get Data From Another Database Again I Stored new data in another dataset and After Looping, I Merged It With Previous One.
I am using a Strored procedure which inserts data in to global temporary table and returns the result sets to Client. when i execute procedure from SQL Plus its working.where whene dataadapter.fill command is executed Invalid ROWID exception Is thrown.
I am VB.Net Windows Application Developer Now i am going an ASP.Net Application. So, the Problem is that in Windows Application i Code this Project like given Below Actually i am Using SQL Server as DataBase and Store Procedure as Query.Becuase i had tried to control the ASP.Net Data Grid with Loop and i Failed to Control it with this method
Private Sub btn_Ok_Click(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles btn_Ok.Click Fill_dataset("Sel_MovNames", "Tbl_MovNames", Convert.toint32(cmb_MovID.SelectedValue)) [code]...
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:
I am searching for a solution to pass a large dataset from visual foxpro(vfp) to a .net web service. The data is personal information such as names, address, phone numbers, etc. with 7 more columns containing id's and other parameters.
We tried cursor to xml dataset but the file size is very large. So my idea is to pass json formatted string. We need to accommodate up to 1 million rows of data
I found this solution on the web for json webservice. [URL] Can this work for such large datasets? Is there anything better suited for my situation
I found this class for VFP [URL] which promises to do what is needed as far as converting to json format. Should this work? Is there anything else I am missing here?
If i use the multi delimited than error shows.How to use the multi delimited.If i run the code to to load the text file given in above show the bellow error
Input array is longer than the number of columns in this table.
I'm currently working on an C#/ASP.NET project that will host several differents e-commerce websites, all running in the same application.I use LinqToSql (moving to PLINQO soon) to access my database. The database contains both informations on the website structure (pages, ...) and the products/orders/users data.
My question is, should I use only one database for all the websites, or sould I create a new database (same model) for every new website?I'm now using a single database (with SiteIDs in some tables) but I have a big security concern, I can't just backup/restore the database for ONE website if something goes wrong (e.g. somebody erase all the products on ONE website) and it's an important requirment of the application.
So I was wondering what are the good practices in that case? Is there big cons if splitting dbs?(I would have to make changes to several database instead of one in case of structural changes, but i guess i can make a db version/update system).How the existing CRMs are dealing with that?Is it a performance problem if a database server host a lot of different DataBases? A complex backup/restore tool would be better?
Subquestion:To make a website replication easy, I can also split the pure CMS data (Pages, Texts, ...) in one DB and the e-commerce data (products/categories/orders in another). It can be achieved by some select/insert functions but it would be easier by just copying a database of course.
I'm working in an environment where a single web application (running in a web-farm) dynamically connects to different SQL Server databases (possibly on different servers) based on user selection (this part is non-negotiable, unless you can gift me $1,000,000 and/or some kind of time altering device).
I'd like to cache some of the commonly used data from the database(s) in the application, such as "settings", and am looking for a best practice to use with the SqlCacheDependency class or a related database cache dependent solution (not opposed to a custom implementation of SQL notification or polling; notification is preferred over polling).
So far, I'm thinking of using a collection of SqlCacheDependency objects (one for each database) that can be referenced by connection string name or related key. So when the connection is changed to a different database, the cache can be requested/populated by a key of <databasekey>+<datakey> and use the appropriate SqlCacheDependency object (probably handled by a cache-managing wrapper).Or is it just better to take the hit and always go to the database?
i run this and i want to fill textbox txtFname with data - but it dont do nothing
using (Conn = new SqlConnection(Conect)) { Conn.Open(); SQL = "SELECT * FROM MEN where id = '" + txtBAR.Text.Trim() + "'"; dsView = new DataSet(); adp = new SqlDataAdapter(SQL, Conn); adp.Fill(dsView, "MEN"); adp.Dispose(); txtFname.Text = dsView.Tables[0].Rows[3][0].ToString(); txtFname.DataBind(); Conn.Close(); }
I have excel file.I want to fill dataset from that excel file & Have to fill the database. I m able to read the excel file,but there is one problem with column whose datatype is Date.
[Code]....
I have attached the excel file (Pic1).
In Pic2,I have attached the snapshot of dataset that is filled.
I want to develop some reports using RDLC and for that i am trying to make a DATASET using a sqlserver stored procedure which is based on dynamic SQL. and ends the procedure like this.
[Code]....
As you can see at the end its executing a sql at the end so my dataset is not coming up with the columns this procedure is returning.. populate these dynamic columns in dataset so i can build a report based on it.
then use the following code, there is nothing to see after running. is it need to add field object into crytsl report corresponding to the field in data set. But i do not know how to add in this situation which is not connected through crystal report.
Lets say for example i fill a dropdownlist with the articles, and the selectedValue is the Articles.Id . I want to get for example, the Title of an article, that has ID=2, for example and fill a textbox with that data.
to get limited records using this method? i.e. by filling dataset using adapter and providing min and max record limit?I wish to do custom pagination using this method.
This issue has stumped me for a while. Hopefully someone here can give me some insight.
When my site runs the following code it works just fine 99% of the time.
[Code]....
The command is calling a SQL Server 2005 stored procedure that takes 20 parameters and returns 6 tables of about 5-50 rows each. The paramters are all NVARCHAR, INT, or BIT data types. Only one of the parameters is Input/Output. There is a total of about 100 rows returned. Normally this takes a fraction of a second, but for some queries, it times out after 30 seconds.
When I run the exact same query in the Management Studio query window it takes 1 second.
what I can do to get the same performance from .Net as I am getting from Management Studio?
I am using ASP.NET 4 (Visual Web Developer 2010 Express with MVC), however I think I should ask here as this will be a general MySQL 5 data access problem. I have other MySQL data access to other table with NO problem but this one.:
Here's my test SQL statement in a method:
public DataSet GetAll() { return ExecuteDataSet( "SELECT co.BookingID, co.BookingNo ,co.ClientID, co.AgencyID " + "FROM clientorder co " + "ORDER BY co.BookingNo"); } protected DataSet ExecuteDataSet(string query)
Should i use dataset in code behind or SqlDataSource on the form designer to fill or bind a DropDownList in my asp.net page I am currently using SqlDatasource on the form and i bind the control to MySqlDatasource because i find it is very easy and to much faster but somebody told me to use dataset from code behind because of security and performance
when my website allow user many connectionstring by text to connect database anh retrieve data. But when user define very may wrong connectionstring. So Method in DAL dataset.Fill() takes a longtime to throw exception.So mywebsite will be die.
I want to method dataset.Fill() throws exception immediately when a connectionstring wrong. How can i do that?
