ADO.NET :: Use System.Data.SqlClient In VB.NET Code - Behind For Page?
Jul 23, 2010I'm attempting to use the following line of code in my VB.NET code-behind for my page:
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I'm attempting to use the following line of code in my VB.NET code-behind for my page:
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I am useing sql and vwd.
i created the db on sql and used database explorer to connect it to vwd.
it keeps failing at step 5 (con.open())
i think i listed all relevant code, but if i missed something let me know and ill post it.
what am i missing.
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When i fill my sql adapter daAuthors.Fill(dsPubs, "MYTable") sometime i get A first chance exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dllmy code can run for a lot hours without any problems but sometime i get the message
View 1 Repliesin my web project i got an error that i couldnt find any solution. the error says: System.Security.SecurityException: Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. when i work in local there were no problem i put files to our server and i changed the database also. when i work in server in web application in Default.aspx i can connect db and get values without any problem using my DataLibrary
BUT the problem in my web service i also use my DataLibrary in webservice but when i try to run a method in web service it gives me the error which is : System.Security.SecurityException: Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
my new db connection is
strConnectionString = "Data Source=OURSERVERNAME\SQLEXPRESS;Initial Catalog=DoveTR;Persist Security Info=True;User ID=sa;Password=123456789;Pooling=True";
currently, I am working on the project where I have to configure Application on IIS7 with network drive and doing this I am getting the error regarding security. Let me explain in detail. We have two production server, both having Windows 2008. now one server acting as the storage server and other server will work as web server which having the IIS (here IIS7). Now, I have to deploy the application on the storage server and in web server I have to configure the application in IIS with the path of network drive (here network drive means path of the folder at storage server). At here I had provide the full path like \ servernamedrivename$foldername, and also provide the credential at "connect at" button.Now when I open the page it will display the page but with the following error.
Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. Now new question that Credential is proper or not? Here my both production server having the user : username1 and password: Password1 but the domain is different. So, what I do that enter only the username1 in user name and password1 in password box.
I'm just a newbie developer using C# (ASP.Net) I'm having trouble in finding the solution in my error:
'System.Data.SqlClient.SqlParameterCollection' does not contain a definition for 'AddWithValue' accepting first argument of type 'System.Data.SqlClient.SqlParameterCollection' could be found (are you missing a directive or an assembly reference?)
I am using parameters before, but never experienced this kind of error.
Is there a way to connect the database PROGRAMMATICALLY without using SYSTEM.DATA.SQLCLIENT?
View 9 Repliescmd.Connection = con;
con.Open();
cmd.CommandText = "Update tiit.Enquiry Set Status='" + DropDownList4.SelectedValue + "', NextFollowup='" + TextBox8.Text + "', Remarks='" + TextBox9.Text + "', Name='" + TextBox1.Text + "', Email='" + TextBox2.Text + "', Phone='" + TextBox3.Text + "','','','','', City='" + TextBox4.Text + "', Country='" + TextBox5.Text + "', Course='" + TextBox6.Text + "', Comments='" + TextBox7.Text + "', Cost='" +TextBox14.Text+ "' where SN='" + HiddenField1.Value + "'";
int i = cmd.ExecuteNonQuery();
con.Close();
I'm having a spot of bother deploying my database to my host using the Publishing Wizard. I'm using the .sql file generated along with RunSQL.aspx as discussed in this blog by Scott Guthrie.
The issue I am having is that the permission is set to dbo but this seems to be causing an issue with the hosted database as in I get the following error when I run RunSQL.aspx.
An error occured: System.Data.SqlClient.SqlException: Cannot find the user 'dbo', because it does not exist or you do not have permission. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException
exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet
bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at ASP.runsql_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in d:~hosting details removed for security~RunSQL.aspx:line 88
Is there any way to make the Publishing Wizard set the owner to a particular username, i.e the username I use to access the hosted database.
I am getting this error message
System.Data.SqlClient.SqlException: Invalid object name 'Members'.
The database name is ACEStaff
I copied it accross from my old server to my new one
The table name in the database is Acestaffrm.members. Is the Acestaff prefix giving me this problem. I notice other table have dbo. prefix
First time using a dataset instead of a data reader, and I'm trying to fill both a datalist on my page, and set the selected item value for a drop down list. The datalist on the page is displaying properly, but I get this errorClass 'System.Data.SqlClient.SqlDataAdapter' cannot be indexed because it has no default property. when trying to set the selected value for the drop down list. Why can't I get the selected value for the drop down list to work properly?
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How do we get Text as a member of 'System.Data.SqlClient.SqlParameter'
See example of 'System.Data.SqlClient.SqlParameter', below:
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Here is the snippet code to insert the Text as a member of 'System.Data.SqlClient.SqlParameter'
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I've researched the System.Security.SecurityException: Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. error.
So far all the suggestions indicate either a custom assembly that needs a permission change (I don't have any custom assemblies) or requires a setting change on the server (I'm not the admin). This is for a ReportViewer app using RDLC files. So my questions are: Are there any other things to try troubleshooting?
I'm a complete newb at attempting to understand (I don't) what I've read on this subject regarding the server admin part. What do I need to tell the server admin to check out and/or change? I've looked at the commonly referenced post on wss_mediumtrust.config (I have no idea what that is). Post link. But with no clue on what the post is talking about I don't know what to ask the admin for.
I get and error when I run a sub select statement. What is wrong with the statement?
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ERROR:
System.Data.SqlClient.SqlException: Only one expression can be specified in the select list when the subquery is not introduced with EXISTS.
When the Stored procedure is executed through SQL Server Management Studio, its taking 23 seconds,When the same Stored proc is called through web app, its throwing below copied exception. It is noticed that when the data is more than 100k records this exception is thrown other wise expected records are shown in UI. Another stored proc from the same app returns over 150k records without any excetpion. Can't conclude that the exception is in Stored proc, because it works from SQL Server Management studio, but throws below exception from Web app.
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I have a website having an aunthentication system. When I am setting my website on IIS 6 the code is absolutly working fine. But when i configure the website on IIS 7 (Windows 2008 server) it is showing me the above error. I am using a stored procedure for it
View 3 RepliesI am facing the following problem when i try to add record in database. "System.Data.SqlClient.SqlException: A severe error occurred on the current command.The results, if any, should be discarded." This exception occurs occasionally, and the sql server log shows the following error whenever the above exception occurs:
Server,Unknown,A user request from the session with SPID 54 generated a fatal exception. SQL Server is terminating this session. Contact Product Support Services with the dump produced in the log directory.
I am getting this error:
CS1061: 'System.Data.SqlClient.SqlDataAdapter' does not contain a definition for 'Rows' and no extension method 'Rows' accepting a first argument of type 'System.Data.SqlClient.SqlDataAdapter' could be found.
Here is my code, what am I doing wrong?:
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View 1 Repliesi am trying to create an insertion form in ASP.net.but i get this exception and i could not find this with google.
<div id = "survey_div">
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:surveyConnectionString1 %>"
DeleteCommand="DELETE FROM survey"
InsertCommand="INSERT INTO survey(age, country, city) VALUES (,,)"
SelectCommand="SELECT FROM survey" UpdateCommand="UPDATE survey SET">
</asp:SqlDataSource>
<asp:DetailsView ID="DetailsView1" runat="server" CellPadding="4"
DataSourceID="SqlDataSource1" EnableModelValidation="True" ForeColor="#333333"
GridLines="None" Height="50px" Width="125px">
<AlternatingRowStyle BackColor="White" />
<CommandRowStyle BackColor="#D1DDF1" Font-Bold="True" />
<EditRowStyle BackColor="#2461BF" />
<FieldHeaderStyle BackColor="#DEE8F5" Font-Bold="True" />
<Fields>
<asp:CommandField ShowInsertButton="True" />
</Fields>
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#EFF3FB" />
</asp:DetailsView>
</div>
Hopefully I am posting this in the correct forum.
I am having a problem with my ASP.Net Web application. The application is developed using vb.net and is linked to a SQL Server database. Let me explain how the application works and the problem I am experiencing. The system is an online web app which allows registered users to create a CV online. One of the pages within the app gives users the chance to add a cover note to their CV. The page that allows them to do this consists of only a textarea control and a button control. The textarea allows users to input up to 4,000 characters.
Once the user clicks the 'Save' button to save their cover note info, the following code then executes.This code checks to see if the CV already has cover note info, if it does, then the application runs an update statement, otherwise, it runs an insert statement.The table within the database which records the cover note information is called tbl_covernote and has three columns, covernote_id (int and autoincrement), cv_id(int), covernote_text (nvarchar(max)).
The error which occurs sometimes is as follows:
Dim dr As SqlDataReader
Dim param(0) As SqlParameter
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this is my web-method for an autoCompleteExtender within my webpart:
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at the line : SqlDataReader myReader = myCmnd.ExecuteReader();<br/>
System.Data.SqlClient is not filling DataTable named "Person" Go to [URL] Webpage message reads: Exception Details: System.Data.SqlClient.SqlException: Invalid object name 'Person'. Source Error:
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Source File: d:hostingcforedDefault.aspx.vb Line: 41 Stack Trace:
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I have asp.net application, using LINQ to connecto to SQL Server 2008 R2 databse. My connection string: Data Source=[SqlServerIp];Initial Catalog=[databaseName]User Id=newLogin;Password=newPassword; When I deploy application on my local IIS (which is not the same machine as database server)
it works fine, but when I deploy application on other IIS (the same machine as sqlServer) it throws an exception: System.Security.SecurityException: Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. how to fix it? Maybe it is due to some bad configuration of IIS?
In code behind getting error: Code:
Dim mySqlSelect As String = "Select distinct GroupName from Vecellio.dbo.GroupsTable where GroupName like %" & prefixText & "% order by GroupName desc" Value of string: Select distinct GroupName from Vecellio.dbo.GroupsTable where GroupName like %A% order by GroupName desc
Error: System.Data.SqlClient.SqlException = {"Incorrect syntax near 'A'."}