My database name is [chitomiho] and my table name is [trytable].
I want code for connecting to database and insert values into try table in asp.net
Here is a great tutorial on connecting to a database in ASP.Net. We're not here to write code for you, only to help you when you're stuck.
http://www.w3schools.com/aspnet/aspnet_dbconnection.asp
Dear Inspiron this is a forum question and not meant to be asked here. If you would have just googled it!!!!
You may find this helpful:
http://msdn.microsoft.com/en-us/library/ms178371.aspx
Related
I have ben following through a tutorial that shows how to get started creating a Web Forms Application in ASP.NET...and have got to the part where you create Data Classes. These assume you are starting from scratch and generating the database from code - however - I already have a database created and populated from elsewhere.
Entering line by line to create the Class for each table seems very laborious. (I'm using VB.Net and VS 2013 by the way)
Q1. Can anyone help by suggesting a more automated way of doing this? Surely there is a tool to grab the schema?
Q2. Although the tutorial mentions Entity Framework and Code Behind briefly - having done some reading and research - I am very confused by all of the different terms for data access. Am I using ADO.NET ?? Is the methodology called Code Behind as opposed to something else? Are there better ways to connect to a database and Read/Update/Delete records.
Q3. If I want to use a Data Grid to show the data do I use the generated classes to do this - or just 'bind' the grid directly to the database?
I have been a developer for 40 years but the newer .Net models are causing me some confusion so any advice gratefully received. (and any simple books or tutorials that can be suggested would be helpful).
Thanks
Q1: What you want is to generate "EF Designer from database" by using a Entity Data Model.
In your project add a new item and look under "Data".
What this technique does is auto generating entity classes from your predefined database.
Q2: I suggest you read Getting started with Entity Framework. "Database First" is just a description of how you want to use the Entity framework - by saying you already have a database structure.
Q3: In this case if you use Entity Framework and the "database first" mechanism to generate entities you can databind the gridview from the result of a entity LINQ query, please see this example: Tutorial: Databinding
I'm trying to retrieve the identity of last inserted row and I want to use scope_identity. The system is developing in ASP.NET and pervasive SQL using ODBC. I thought my google skills were good but I can't find anything about this, is it even possible?
Grateful for any answer or someone pointing in any direction helping me solve this.
If the field has an Identity field, you can issue a SELECT ##identity to get the last identity value inserted.
I have Neo4j server with imported data from http://www.neo4j.org/develop/example_data Cineacts mvies and actors. I want to known the exact database schema, fileda relations etc. How can I do it? I already tried in webrowser tool but it did not helped.
any ideas?
Take a look at http://www.neo4j.org/graphgist?9c4cb9e842ed24a3feae which will help show you the structure of the graph
I also wrote a blog post about exploring a database:
http://jexp.de/blog/2014/02/exploring-an-unknown-neo4j-database/
And there is the neoprofiler by M. David Allen
https://github.com/moxious/neoprofiler
i use C++ Builder with SQLite database. I connect with the database through DBExpress. The problem is that DBGrid shows (WIDEMEMO) in every field and not the exact values that the database has.
I dont have this problem with other databases such as Firebird for example.
Why this behaviour? am i missing something with sqlite and how can be fixed.
Do u suggest me use SQLite / Firebird or other embeded database for a small standalone application.
Thanks in advance.
I am using FireDAC in Delphi and had the same problem.
I have resolved this issue by changing the dataset TWideMemoField DisplayValue property from dvClass to dvFull. Now my DBGrid works as expected.
I know this question is old but since it doesn't have any answer selected I will throw in my two cents. I recently came across the same problem and found a solution that might work for you as well.
This problem exists in your C++ DataSet and your SQLite. As it turns out that when you have a field with no defined size especially a text field, that field will be treated like a widememo or Memo in your DBGrid. So, what you need to do is define your text field with specific numbers of characters i.e. VARCHAR(10).
That's what I did and it work for me. I am using MySQL and Delphi with DBGrid.
This is a problem with the DBGrid. It doesn't handle the WIDEMEMO. See link for help with this.
Displaying and editing MEMO fields in Delphi's TDBGrid
i try to use sqlite with phonegap on icenium and i have to ask a question (maybe a noob question).
In fact i cant persist my datas structure in sqlite.
I explain, i created two functions on onDeviceReady(),
one is createDB() other is createTables(), and if i erase the createTables() function, my structure erases.
Thanks you in advance, and sorry for my bad english.
Hello See this example ....how its working SQlite with HTML5
http://www.tegdesign.com/offline-html5-web-database-techniques-using-html5sql-js/