How Check Either One Name Of The User Is Present Or Not In Data Table From C#.net
Jan 31, 2008
hi
can anyone help me out, i have one issue that is how i have to check while adding new user details to database table weather that user name is exist in that table or not.
for my application i'm using oracle database and C#.Net.
table is g_users and columns are:
Name Null? Type
----------------------------------------- -------- ----------------------------
USERID NOT NULL VARCHAR2(5)
NAME VARCHAR2(20)
EMPID VARCHAR2(5)
USERNAME NOT NULL VARCHAR2(30)
MOBILE NUMBER(12)
EMAILID VARCHAR2(20)
DOMAIN NOT NULL VARCHAR2(30)
i need to check from c# programming before inserting a new row into table weather username is already exists are not. how to check this one?
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Jan 30, 2007
I have a comments field in database table which holds all html data, like bold chars and underline and with fonts etc.
Is it possible to show that data in the report or do i have to extract the data only by excluding all html / font tags etc.
Please help thank you very much.
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May 21, 2015
Inside of stored procedure you have the code
create table #datatable (id int,
name varchar(100),
email varchar(10),
phone varchar(10),
cellphone varchar(10),
none varchar(10)
);
insert into #datatable
exec ('select *
from datatable
where id = 1')
select * from #datatable
I still want to retrieve the data and present it in the software's presentation layer but I still want to remove the temp table in order to reduce performance issue etc.
If I paste the code DROP
TABLE #datatable after
insert into #datatable
exec ('select *
from datatable
where id = 1')
Does it gonna work to present the data in the presentation layer after removing the temp table?
The goal is to retrieve the data from a stored procedure and present it in the software's presentation layer and I still need to remove the temptable after using it because I will use the SP many time in production phase.
[URL]
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Oct 27, 2007
Hi all!
I need to check data changes in some tables from specified date. Can it be done without triggers for each table?
SQL Server Management Studio always says "Data was changed" if another user updates data and you try to update old version. How it checks data modification date? I found only this:
USE [ScheduleDB]
GO
SELECT * FROM sys.objects WHERE object_id = OBJECT_ID('[dbo].[TTest]') AND type in ('U')
but it can only show structure modification date.
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Jan 30, 2006
Hi..
I got 10 Tables with data in it for 100 Loans. The data can be Good and Bad .....
I had a Update Proc which Updates the 10 tables with the Good data what ever i pass...for this 100 Loans
Tha Proc will update the existing data in all tables whether it is Good or Bad Data.
when the updating is completed I want to know what are the Loans that were updated where there is a Bad Data in atleast one Field of the 10tables.
I don't want to check field by field in each table.... if there is a bad data and my proc updated with a Good Data i want to know that Loan.
Can any one has an idea on this,,,,
Thanks
Bob
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Dec 13, 2007
I have Two table.One is MainTable and other is Temporary table.Both have Same Field
Before entering data into main table I want to check weather these data's are already there or not.
Here i am checking only three column of temporary table to the MainTable.
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Jun 12, 2008
Can anyone help me, please.
I want my users to submit there email address and username to my Sql Database, but i want to prevent them from adding already existed usernames to my table.
I have a usernametextbox and emailtextbox and a Submit button.
How do i check in my table before Submiting?
Thanks!
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Jun 16, 2008
Hello. I have been challanged to build an application that keeps track of inventory and dates of every item that needs inspection on regular intervals. The original application was a .NET windows application and i have been tasked to "port" and improve it to a .NET C# web application.
The original database was in access and i have imported everyting to SQL and all the data is in a single table. So far the table is relatively small so i decided to keep the current database design.
What i need to do is to select all the items that are comming up for inspection in the comming months and present them. Each item has a uniqe article number (artnr) with the item name, category and location of the item. The location is the part i would like each items to be presented by. Basicly i would like to retrive artnr, name, type and present x number of gridviews or a sorted presentation where each item is shown inside each gw/whatever by location.
I also considered moving all locations to it's own table and connect it with a PK/FK to the prinmary article table but i dont know if this will help me or not. Basicly i have no idea how i would present the items by location where each gridview/somethign else is it's own location.
I could really use som help with how i can retrive and present the data so it is showed in the above manner.
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May 5, 2006
Hi everyone,
I have a task to create a dts package, which will delete records in a SQL table, which are present on a sheet tab in Excel. I know how to transfer records from Excel to SQL table and vice versa, but not sure how I can delete the records in SQL table, which are present in Excel. Note that there are just 2 columns - one is a key and the other name.
Thank you all in advance,
Saurav
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Dec 18, 2006
(Sorry this was posted to VWD2005 Express by mistake)
I have created a simple project using ASP.NET 2.0 which enables a user to login. I created the login user using the Web Administration Tool in Visual Studio 2005.
I created everything locally and it worked.
Locally I have 2 databases. One containing normal data (which my site uses to populate a GridView control) and the other being ASPNETDB.MDF - which contains membership (login user) data. These 2 databases sit in the App_Data folder which is in the root of the project.
I have a remote database which is hosted in a shared environment.
This is just the one database and it appears to have all tables in the one database (membership tables and normal tables - such as the one I use to populate my GridView control).
I uploaded the website and using the Database Publishing Wizard I uploaded the database data to the shared host. I also changed the connection string to point to my remote database.
If I visit the website the GridView is populating correctly (pulling data from the remote database) but when I try to login it crashes. The error is "Access denied creating App_Data sub directory".
The membership login details for the user I created are in the remote database as I have compared the data in it to the data in my ASPNETDB.MDF local database.
If I launch from within Visual Studio 2005 then it allows me to login perfectly well.
Please does anybody know why it won't let me login when I access it via the website?
Many thanks for any help,
Graham
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Apr 23, 2008
I'm writing my first .net app in VB.net. I can connect to my database, but get the following error when I try to set a label value. (My code is listed below) What am I missing?
Exception Details: System.InvalidOperationException: Invalid attempt to read when no data is present.Source Error:
Line 19:
Line 20: reader = comm.ExecuteReader()
Line 21: EmployeesLabel.Text = reader.Item("tkinit")
Line 22:
Line 23: reader.Close()
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Import Namespace="System.Configuration" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim conn As SqlConnectionDim comm As SqlCommand
Dim reader As SqlDataReaderDim connectionString As String = ConfigurationManager.ConnectionStrings("IntegratedDataConnectionString").ConnectionString
conn = New SqlConnection(connectionString)
comm = New SqlCommand("Select top 1 tkinit from tEliteTimeKeep", conn)
conn.Open()
reader = comm.ExecuteReader()EmployeesLabel.Text = reader.Item("tkinit")
reader.Close()
conn.Close()
End Sub
</script><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server"><title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="EmployeesLabel" runat="server" ></asp:Label>
</div></form>
</body>
</html>
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May 16, 2008
My query actually returns rows but when I run, I get this error "Invalid attempt to read when no data is present". It says that the datareader does not return any rows.
Please help.
Thanks in advance
Sangita
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Nov 1, 2006
I have a stored procedure that inserts a record, and then either returns an error or, when successful, returns the entire row. This is a method I use on sites I have developed in other languages when inserting or updating data; I am new to c#.
With C# I have a datareader executing the sp, and the insert works fine, however I get the error "Invalid attempt to read when no data is present." when I try to read the data that should be coming back. I have researched and updated my code so that I no longer get the error, but I still cannot get the data back. I trap the sp in profiler, ran it in anaylzer, and it works fine - data is returned. But in the code, it does not see the data.
I have modified the return results so now I just have the ID coming back and that works fine. But I would rather just return the entire row. Can this be done, and if so, how?
Thanks.
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Jan 2, 2007
Dear Friends:
Could somebody please help me to stop sending scheduled report when no data is present in the report? Actually I have a daily report which is sent to the client and in a week, two or three days, data will not be there and thus it delivers blank report to the client.
So how can I stop sending blank mails to the client?
Thanks in Advance
Emmanuel Mathew
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Jul 25, 2007
I am using a standard dbreader type of loop in a query to retrieve data. I am running over what should be end of record set, every time.
I have altered my read procedures to use while dbreader.read() and if dbreader.read(), to attempt to avoid getting the error. Neither is stopping it.
While debugging it, as I get to the last item and actually get the error, if I check the dbreader status, it still indicates that it has rows.
Anyone have any ideas on how to get around this?
TIA, Tom
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Sep 26, 2006
when execute
If IsDBNull(sqlreader.GetValue(i)) Then
Error info:Invalid attempt to read when no data is present
but i am sure there were records
Any ideas? Regards
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Jan 19, 2014
I have created a table but i forget in which database. I know the table name but i dont know the database name..
I have to filter my table from all database ... how can i do and find....
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May 20, 2015
I have multiple ODBC connection and how to check all connection automatically during routine check by using batch file.
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Jan 3, 2008
I am getting this error even though there should be data present. When I test the SQL statement in query analyzer, it returns 1 row.
<%@ Import Namespace="System.Data.SqlClient" %><%@ Page Language="VB" MasterPageFile="~/MasterPage.master" Title="Blog" %>
<script runat="server">Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim strConnection As String = System.Configuration.ConfigurationManager.ConnectionStrings("currentConnection").ToString 'currentConnection is defined in web.config and works when used in other pages on the siteDim dbConn As SqlConnection = New SqlConnection(strConnection)
dbConn.Open()
Dim strSelectCommandFirstEntry As String = "SELECT MAX(blogEntryId) as maxID FROM site_Blog"Dim cmdFirstEntry As SqlCommand = New SqlCommand(strSelectCommandFirstEntry, dbConn)Dim rdrFirstEntryData As SqlDataReader = cmdFirstEntry.ExecuteReader()Dim strFirstEntryData As Int32 = rdrFirstEntryData(0) 'error occurs here, i have also tried rdrFirstEntryData("maxID") with same errorrdrFirstEntryData.Close()dbConn.Close()
</script>
When debugging this code and stopping on this line:
Dim strFirstEntryData As Int32 = rdrFirstEntryData(0)
rdrFirstEntryData has the following values:hasRows = True, FieldCount=1, Item=In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user. and when i click the refresh button...Item = Overload resolution failed because no accessible 'Item' accepts this number of arguments.
I suspect that the note for "Item" is my clue to the source of the problem, but I don't know what it means. Please, help.
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Jul 2, 2004
I'm trying to determine if the record is NULL/empty or is valid from the datareader.
objReader = strCMD.ExecuteReader
objReader.Read()
if objReader.IsDBNull(0) = true then...
If NULL/Empty, display no records found. If records are found, display "1 or more records have been found". I keep getting the error "Invalid attempt to read when no data is present". I'm not sure what I am doing wrong here.
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Jun 1, 2015
Using SSIS 2012 (within Visual Studio) on Windows 7.
Before allowing my Data Flow task to fire, I'd like to check the target table (OLE DB Destination) for a specific date value in a specific field. I've seen how the Lookup Task is commonly used to check for dupes before inserting, but I'm not able to use that method because the data value I want to search the table for is contained in a Global Variable (let's say "MyVariableDate").
Is there any way to check for any records in a target table where Date1 = MyVariableDate (i.e. scanning the entire table for any occurrence of MyVariableDate in the Date1 field)?
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Nov 10, 2015
Was reported to me that reports were running but data was not being displayed. After checknig the Config manager I found that if I went to the reportserver url then clicked on a report it would diplay he correct data. But when trying it on the normal website it would not display anything.
sql server 2008 r2
ver: 10.50.2550.0
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Mar 25, 2008
Hi there I have a dataset based on a view (the view contains an union all select). In the Data-Tab in BIDS i can execute the query, set all parameters and get the desired results. In the report though, I am getting no values.
My year-parameters are used as row-descriptions and based on that I calculate the year-values in the data region. I don't know what the problem is... should I post the rdl-file?
Thanks in advance!
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Oct 19, 2014
I have a master table and i need to import the rows into the parent and child table.
Master table name is Flatfile_Inventory
Parent Table name is INVENTORY
Child Tables name are INVENTORY_AMOUNT,INVENTORY_DETAILS,INVENTORY_VEHICLE,
Error details will be goes to LOG_INVENTORY_ERROR
I have 4 duplicate rows in the Flatfile_Inventory which i have already inserted in the Parent and child table.
Again when i run the query using stored procedure,its tells that all the 4 rows are duplicate and will move to the Log_Inventory_Error.
I need is if i have the duplicate rows in the flatfile_Inventory when i start inserting into the parent and child table the already inserted row have the unique ID i must identify it and delete that row in the both parent and chlid table.And latest row must get inserted into the Parent and child table from Flatfile_Inventory.
-- ===============================================================================================
-- STORED PROCEDURE FOR FLATFILE_INVENTORY
-- ===============================================================================================
USE [IconicMarketing]
---=======================================SALES_CURSUR===========================================
--USE IconicMarketing
--GO
DECLARE
@FileType varchar(50) ,
@ACDealerID varchar(50) ,
[code].....
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Feb 11, 2008
I have a requirement wherein PDF files are being rendered from an .rdl (report definition language), through the use of a SSRS scheduler automatically. The generated PDF file is further emailed to a mailing list, through the same scheduler. However, there are situations where the PDF is generated as an empty file (under certain specified circumstances) [through the automatic scheduler run]. In this situation, it is required not to email the PDF at all.
I would appreciate an input which lets me know how to prevent the generation of the PDF file, when there are no records in the dataset that binds to the .rdl.Alternatively, is there any indicator via which the scheduler can be alerted NOT to pick up files 0 KB in size?
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Sep 15, 2006
Hi all, I am not over familiar with SQL, I am a VB programmer, simply I need to achieve the following within Enterprise Manager.
I have 2 tables, different designs, different number of rows, I simply need to check whether the contents of a column in the first table is in a column in the second table, just simply a table/column to table/column data check for the same data content.
Easy Peasy for you guys, any help would be appreciated.
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Dec 7, 2006
This is my first time to deploy an asp.net2 web site. Everything is working fine on my local computer but when i published the web site on a remote computer i get the error "Failed to generate a user instance of SQL Server due to failure in retrieving the user's local application data path. Please make sure the user has a local user profile on the computer. The connection will be closed" (only in pages that try to access the database)
Help pleaseee
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Aug 7, 2015
I have an excel sheet containing one column (ID_NO) with 400K rows. I have a database from where I have to fetch some other columns from a Netezza database. Initially I tried hardcoding all the 400K rows in the query that I wrote using filter WHERE ID IN ('1212','2334'). But after pasting all the 400K rows the query is running indefinitely.
I have imported all the ID in a SQL table (MY_LIST table). I used a DFT, and selected ODBC source, and selected my netezza server. Then in the 'Data access mode' I selected the SQL command from the dropdown.I pasted the same query that I wrote in Netezza. Is there any way to pull only for those records that I have pulled in my SQL table (MY_LIST) ?
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Jun 12, 2005
Hi,I using vb.net to do this. I need to retrieve data from a table name "User". The table is in a sql server. I having trouble retrieve data from it. This is my code
Dim strsql As String = "SELECT DISTINCT NameID FROM User"Dim cmd As New sqlCommand(strsql, cn)Dim das As New sqlDataAdapter(cmd)Dim da As DataSet = New DataSetdas.Fill(da)This is the error message.
Syntax error in FROM clause. 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. Source Error:
Line 31: Dim das As New sqlDataAdapter(cmd)
Line 32: Dim da As DataSet = New DataSet
Line 33: das.Fill(da)
Line 34:
Line 35: DropDownList1.DataTextField = "NameID"I have tried other table, no problem, data is retrieved. Seem like "User" is restricted word... Worse is i cannot change the table name, only thing i can do is get data from it. So hope someone can help me on this. thanks in advance!!
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Jun 22, 2007
Hi,
Question:
I just moved a database from one server to the other and now I'm getting an error when I try to modify a field in my table from management studio:
- sql2005 the user does not have permission to perform this action.
I made sure to remove all users from that database once i got it up and running on my new server and made sure I didn't have orphaned users.
I created a new userid and gave it full dbo rights. I planned on restricting permissions later.
Is there something new to check in 2005 that would prevent a user with full dbo to modify data in a table?
The table has no constraints or dependencies, it's basically a lookup table so very simple stuff.
Thanks, Seb.
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Jun 5, 2008
my aspnetdb.mdf can,t created my remote connection settings in sql server is ok
and i get this folwing error :
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) 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. SQLExpress database file auto-creation error:
The connection string specifies a local Sql Server Express instance using a database location within the applications App_Data directory. The provider attempted to automatically create the application services database because the provider determined that the database does not exist. The following configuration requirements are necessary to successfully check for existence of the application services database and automatically create the application services database:
If the applications App_Data directory does not already exist, the web server account must have read and write access to the applications directory. This is necessary because the web server account will automatically create the App_Data directory if it does not already exist.
If the applications App_Data directory already exists, the web server account only requires read and write access to the applications App_Data directory. This is necessary because the web server account will attempt to verify that the Sql Server Express database already exists within the applications App_Data directory. Revoking read access on the App_Data directory from the web server account will prevent the provider from correctly determining if the Sql Server Express database already exists. This will cause an error when the provider attempts to create a duplicate of an already existing database. Write access is required because the web server accounts credentials are used when creating the new database.
Sql Server Express must be installed on the machine.
The process identity for the web server account must have a local user profile. See the readme document for details on how to create a local user profile for both machine and domain accounts.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
[SqlException (0x80131904): An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)]
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +115
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +346
System.Data.SqlClient.TdsParser.Connect(Boolean& useFailoverPartner, Boolean& failoverDemandDone, String host, String failoverPartner, String protocol, SqlInternalConnectionTds connHandler, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject, Boolean aliasLookup) +1093
System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +1083
System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +272
System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +351
System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup) +90
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +115
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +122
System.Data.SqlClient.SqlConnection.Open() +227
System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString) +110
[HttpException (0x80004005): Unable to connect to SQL Server database.]
System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString) +181
System.Web.Management.SqlServices.SetupApplicationServices(String server, String user, String password, Boolean trusted, String connectionString, String database, String dbFileName, SqlFeatures features, Boolean install) +167
System.Web.Management.SqlServices.Install(String database, String dbFileName, String connectionString) +46
System.Web.DataAccess.SqlConnectionHelper.CreateMdfFile(String fullFileName, String dataDir, String connectionString) +681
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Aug 1, 2001
dear all,
i need yours expertise to help me find out the number of user license in the Ms SQL 7. beside that, can i increase the number of user license manually.
Thank.
regards dennis
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Jun 5, 2000
Can anyone out there help me write a sp to determine if a user has a certain role?
I'm trying to use "sp_helpuser @UserName".
Can I declare a cursor with "EXEC sp_helpuser @UserName"? I'm not having success with this.
What about SELECT [GroupName] FROM EXEC sp_helpuser @UserName WHERE [GroupName] = @GroupName? Again, syntax error.
Is there already a better way that someone knows of?
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