C# - Created Dataset Connected To Filebased Sql Database?
Jan 26, 2011
So i am developing app according to official asp.net tutorials DAL Tutorial.So i created dataset connected to filebased sql database where are tables VIDEO, GENRE, LOAN! VIDEO has FK to GENRE and LOAN has FK to VIDEO! I tried to create method GetVideoByLoan with this sql command:
SELECT VIDEO.ID_VIDEO, VIDEO.TITLE, VIDEO.DIRECTOR, VIDEO.YEAR, GENRE.TITLE AS GENRE_TITLE
FROM VIDEO INNER JOIN
GENRE ON VIDEO.ID_GENRE = GENRE.ID_GENRE INNER JOIN
LOAN ON VIDEO.ID_VIDEO = LOAN.ID_VIDEO
WHERE (LOAN.USERID = @USERID OR @USERID = cast(cast(0 as binary) as uniqueidentifier) AND(LOAN.ISLOAN = @ISLOAN)
Everything is ok, no problem to return the results, but when i try this sql:
SELECT LOAN.ID_LOAN, LOAN.USERID, LOAN.ID_VIDEO, VIDEO.TITLE, VIDEO.DIRECTOR, VIDEO.YEAR, GENRE.TITLE AS GENRE_TITLE[code]...
i get error.Failed to enable constraints. One or more rows contain values violating non-null, unique,
or foreign-key constraints.
Description: An unhandled exception occurred during the execution of the current web request.
Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.ConstraintException: Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
If i run above sql command in query editor everything is fine, but when i try to access it through dataset the above error apperas, despite that first sql was working. I also tried to remove VIDEO DataTable from DataSet and drop it there from server explorer again but it not helped.
View 2 Replies
Similar Messages:
Oct 18, 2010
I have a question related to MDF file that store out data in. Actually I'm a newbie in ASP and I found a project that has ASP.NET plus C# so I want to start that file so placed all the file in C:inetpubwwwroot. There is a folder that call App_Data and has a database file end with .MDF Now how can I open this file to see the whole tables? I have Microsoft server 2008 Developer and I have VS 2008 and how can I start my ASP page with database loaded?
View 1 Replies
Aug 15, 2010
can anybody tell me how to show how long your connectionstring has been connected to the database?
View 4 Replies
Aug 19, 2010
I can't see it nowhere in Visual Studio's Solution Explorer. The tutorial that I am following is using the Northwind database and hence the need to add the code line "using NorthWindTableAdatpter;" statement.So I thought I needed to add "using myDBTableAdapters" statement in my code which I did, but it's giving an error saying:
"The type or namespace name 'myDbTableAdapters' could not be found (are you missing a using directive or an assembly reference?)"
What's wrong? Where is the class for myDB's table adapter? I searched the .xsd file, but there's no mention of "myDBTableAdapters".It's not there in the Solution Explorer.
View 1 Replies
Jan 30, 2011
I have a database containing various datafields that I need to display to a user based on their userID (which is assigned during login).
I need the data to be displayed in a specific format. i already have a table with input (text) fields and select fields created in html.
I need to know the easiest way to populate these fields with the data found in my database in an MVC fashion.
View 2 Replies
Mar 30, 2010
when a website is entered in a browser it should take to a login page (in localhost) and if the login succeed then the site should be loaded else an error page should be displayed. the login page will be connected to local database. how to do this?
View 6 Replies
May 3, 2010
Ive created a web site using VS2008 ASP.net and connected to a Firebird Database.
I have a page that has a GridView(added at design time) and have connected to a table at runtime.
[Code]....
All good as the table contents are displayed at 10 rows per page. Ive set the Property AllowSorting to True. Has anyone got examples on how to code the sorting? Ive had a look round the net but all the examples Ive tried dont work.
View 3 Replies
Apr 16, 2010
I have a DataSet that I have added to my project where I can Insert and Add records using the Add Query function in Visual Studio 2010, however I want to add transactions to this, I have found a few examples but cannot seem to find one that works with these.
I know I need to use the SQLClient.SQLTransaction Class somehow. I used the Add New Data Source Wizard and added the Tables/View/Functions I need, I just need an example using this process such as How to get the DataConnection my DataSet has used. Assuming all options have been set in the wizard and I am only using the pre-defined adapters and options asked for in this wizard, how to I add the Transaction logic to my Database.
For example I have a DataSet called ProductDataSet with the XSD created for this, I have then added my Stock table as a Datasource and Added an AddStock method with a wizard, this also if a new item calls an AddItem method, if either of these fails I want to rollback the AddItem and AddStock in this case.
View 3 Replies
Jun 9, 2012
after creating a xsd dataset in one machine when i try to use the another in a application in another system though i can use it for fetching records & all i am not able to confidure it or preview data.i already have the connectin string in web config.what changes needs to be done so that the dataset from system 1 can work in ssytem2
View 1 Replies
Mar 27, 2010
I have a stored procedure in my database that sorts a dataset by distance from the specific address input by the user. The distance is created among each individual users query and the sorting of distance occurs within my stored procedure, the distance is not returned in the output. Is there a way I can create a temporary column that returns the distance so that I can give the user an option to sort by distance?
View 9 Replies
Mar 24, 2011
then the database table is created in database(that is SQL express),how can do that.Please sir help me in that problem.I try that thing and debug the code and there is no error in the code but when I click the button in run time ,no table is created in the database(which is placed in sql express 2005).So my problem is that why the table is not created in the database.
[code]...
View 3 Replies
Mar 20, 2011
My question is that if the user click on button (which is place in default.aspx, for example) then the database table is created in database (SQL express), how can do that? I have tried but errors are occuring during debugging, errors are:the best overloaded method match for 'system.data.odbc.odbc command.odbc command(string,system.data.odbc.odbc connection)'has some invalid arguments.
Argument'2':cannot convert from 'system.data.sqlclient.sqlconnection' to 'system.data.odbc.odbc connection'.
The code written in c# behind the button (button is placed in default.aspx, for example) is:
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
[code]...
View 2 Replies
Mar 30, 2011
I have created a web application and an SQL database using Web Developer 2010 Express. I have SQL Server 2008 and SQL Server Management Studio Express. In order to deploy the database to my hosting space I need to create a .BAK file from my new database. I think I can do this from with the Management Studio, but can't figure out how to get it to connect to the database. I have used Management Studio before to retore another SQL database and the only connection I see when I open the Management Studio is the old connection to the old database. How do I connect to my new database?
View 6 Replies
Sep 6, 2010
I have a "hello world" database project. A mdf database with 1 table "users", the table has 2 columns userid & username (both varchar(50)). I added a dataset called Database1Dataset.xsd. I drag the table onto it and it creates the "users" datatable. I checked it to see if it created the insert and update commands and it has.
On my form I have 2 buttons, one for read and the other for write/save.
The read button works and I can see the test records in the database;
[Code]....
The second button should add a new record and save it down to the database but this does not work. Somehow the changes are not being commited and saved.
[Code]....
View 5 Replies
Feb 14, 2011
How to update database with dataset
View 4 Replies
Mar 9, 2011
I'd like to insert data from excel to ms sql server.
I have success to read the data from excel by using dataset, but i don't know who to insert all data into database.
[Code]....
View 2 Replies
Oct 15, 2010
how can store the text value of dynamically created textbox in database.
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class frndslambook : System.Web.UI.Page
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
SqlCommand com1;
SqlCommand com;
SqlDataReader dr1;
static string[] exp;
static string exp1;
static long c;
TextBox[] textBoxArr = new TextBox[c + 1];
protected void Page_Load(object sender, EventArgs e)
{
com1 = new SqlCommand("Select * From slambook Where username=@username", con);
com1.Parameters.Add("@username", SqlDbType.NVarChar).Value = Session["userfrndname"].ToString();
try
{
if (con.State == ConnectionState.Closed)
con.Open();
dr1 = com1.ExecuteReader();
if (dr1.Read())
{
string exp1 = dr1["slambookfields"].ToString();
long c = Convert.ToInt64(exp1.Length);
Label[] l1 = new Label[c + 1];//array of lables
TextBox[] textBoxArr = new TextBox[c + 1];//array of textboxes
exp = (exp1).Trim('^').Split('^');
for (int i = 0; i < exp.Length; i++)
{
Panel frndstextBoxLabelGroup = new Panel();
l1[i] = new Label();
l1[i].ID = "frndslambooklabel" + i.ToString();
l1[i].Text = exp[i].ToString();
l1[i].Visible = true;
textBoxArr[i] = new TextBox();
textBoxArr[i].ID = "frndslambooktextbox" + i.ToString();
textBoxArr[i].Visible = true;
//Initializing the TextBox so that it is not rendered in the browser
frndstextBoxLabelGroup.ID = "frndstextBoxLabelGroup" + i.ToString();
fspfrndslambook.Visible = true;
// Pnl_TextBox.Controls.Add(br);
frndstextBoxLabelGroup.Controls.Add(l1[i]);
frndstextBoxLabelGroup.Controls.Add(textBoxArr[i]);
fspfrndslambook.Controls.Add(frndstextBoxLabelGroup);
}
}
}
catch (Exception exc)
{
}
finally
{
con.Close();
}
}
protected void fsbfill_Click(object sender, EventArgs e)
{
com = new SqlCommand("Insert Into slambookans (slambookfields_ans,sender,receiver) Values(@slambookfields_ans,@sender,@receiver)", con);
for (int i = 0; i < exp.Length; i++)
//{
//textBoxArr[i] = new TextBox();
com.Parameters.Add("@slambookfields_ans", SqlDbType.NVarChar).Value =textBoxArr[i].Text;
}
com.Parameters.Add("@sender", SqlDbType.NVarChar).Value = Session["username"].ToString();
com.Parameters.Add("@receiver", SqlDbType.NVarChar).Value = Session["userfrndname"].ToString();
try
{
if (con.State == ConnectionState.Closed)
con.Open();
int i=com.ExecuteNonQuery();
if(i!=0)
Response.Write("Success");
else
Response.Write("Fail");
}
catch(Exception exc)
{
}
finally
{
con.Close();
}
}
}
View 12 Replies
Aug 17, 2010
I created a new database with the help of Database Configuration Assistant !I created with the scott account.Now i'm not able to connect to the database with the connect identifier with the scott account.The error i get is.,
ERROR - ORA-12154: TNS:could not resolve the connect identifier specified.
View 1 Replies
Feb 10, 2011
I recently have a problem while switching from regular sql datasource to the object datasource using the dataset object.
I have only 1 sql server so I create 2 database 1 for testing and 1 for running. After I create the dataset object I can use it fine with my test site and database. However, when I upload to it use on the production database (I actually just have to switch the sql connectionstring in web.config), I keep getting error of target of invocation throwing errors.
When I do a search for the test database in the project, I can see that in the dataset object the test database's name is automatically added to my select stored procedure name (i.e. [Test].[dbo].[My_stored_procedure] instead of just [dbo].[My_stored_procedure]). I thought this is my problem but even when I replace [Test] with my [Product] database name it still won't work.
View 4 Replies
Feb 22, 2011
I have an asp.net application using visual studio express 2008. On one of my pages I created a dataset from one of my database tables. I am able to delete rows and add rows to the new dataset table. I then have a button and on the click event I use the commandbuilder to update the database table. The database table updates with new rows but the deleted rows are not carried out and I can not figure out why desite spending several hours on google to resolve this issue?
Here is some of my code:
Protected Sub Button_updateDatabase_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button_updateDatabase.Click
Try
'I have created a session variable for my data adapter
Dim commandbuilder As SqlCommandBuilder = New SqlCommandBuilder(Session("Adapter"))
Session("Adapter").UpdateCommand = commandbuilder.GetUpdateCommand
Session("Adapter").DeleteCommand = commandbuilder.GetDeleteCommand
'I created a session variable for my dataset
'This update command updates new rows to my database table but not deleted rows
Session("Adapter").Update(Session("CalendarDataset"), "Name")
Catch ex As Exception
Response.Write(ex.Message)
End Try
End Sub
View 4 Replies
Jan 23, 2010
I have creted a form for a job submision it has a number of text boxes / date pickers / text edittor and async file uploader, onload it creates a random string and stores it in a text box (this becomes the job id) this id is also used to create a folder (of the same name) to store any file uploaded, I have tried to store the file location so I can add it to the database but the textbox/lbl remain empty.Secondly I would like to submit this form to a database I am using asp.net 3.5 with rules / membership / state on sql I would like to be able to post the user role / name as part of the data store if this is possible.I have attached my code the asyncfileUploader was converted from C# Demo and modified using suggestions found via google.
aspx file:
[Code]....
aspx.vb file:
[Code]....
the code seems to function fine apart from not returning the uploaded file location (so it can be downloaded via a link later)
View 13 Replies
Apr 16, 2013
I created a web site with admin control with C# ASP.Net. Admin can create a new button1 with button2.I did this. but when admin login again the created button is not seen.I guess I should save this created button at SQL Server but how should I do.
My code which create dinamically button is here:
Button btn2 = new Button(); btn2.ID = "btnEdit"; btn2.Text = txtKategoriEkle.Text; btn2.Attributes.Add("OnClick", "btnEdit_Click"); btn2.Attributes.Add("onclick", "my_javascript_function"); form1.Controls.Add(btn2);
View 1 Replies
Apr 21, 2010
I'm trying to use a DataSet to maintain some rows for a table, and when I've finished my changes, send all changes to the database using a SqlDataAdapter.
I find if there are no rows in the table in the database then I am getting a 'Object reference not set to an instance of an object' when I try to access the table in the Dataset.
Is there a way to work with a Dataset like this ie. I start off with an empty table and I wish to add rows, to access the structure of the table rows, build rows, then add them and do the update on the SQLDataAdapter.
Here is my code:
[Code]....
View 2 Replies
Aug 27, 2010
I have 2 tables in SqlServer 2008.
Table1: T1id, SomeData
Table2: T2id, T1id, SomeData
I am using DataAdapter.FillSchema to create shema of tables in DataSet. I created DataRelation on columns
T1id in both tables.
Now when i try to Update Sql Database T1id in Table2 remains 0 and not the value of T1id in Table1.
I can successfully update Sql Database if i fill DataSet with records first (Using DataAdapter.Fill), but that's not what i want to do. I don't need "old" records in my dataset. I want to use dataset just to store all imputs from user until the proccess is done and then insert all those records "at the same time".
View 9 Replies
Nov 30, 2010
I have this code :-
[Code]....
But the result is it only insert the first row of the HQDS dataset...then it will give this error :"Violation of PRIMARY KEY constraint 'PK_BRANCH'. Cannot insert duplicate key in object dbo.TS_BRANCH'.The statement has been terminated.
If I comment this line : Destadapter.Fill(HQds, "Testresult")
It doesn't give any error and also it doesn't insert anything to the database.
Violation of PRIMARY KEY constraint 'PK_TS_BRANCH'. Cannot insert duplicate key in object 'dbo.TS_BRANCH'.
View 5 Replies
