I keep getting this error when inserting a lot of data into a mysql databaseERROR [HY000] [MySQL][ODBC 3.51 Driver][mysqld-5.1.40-community]Got a packet bigger than 'max_allowed_packet' byte
View 1 RepliesConnection Error MySqln the pictureImageof Visual Studio 20
View 1 RepliesI have installed MySQL and set up an ODBC driver to point to a database in MySQL. In ASP.NET I have defined a connection string to attach to this MySQL dtabase.
<asp:SqlDataSource
ID="SqlDataSource2"
runat="server"
ConnectionString="<%$
ConnectionStrings:MySQLConnectionString %>"
SelectCommand="SELECT
* FROM [categories]"
ProviderName="<%$
ConnectionStrings:MySQLConnectionString.ProviderName %>">
</asp:SqlDataSource>
However in ASP.NET connection wizard, although the tables are shown, no colums are shown and when I attempt to run the page which uses this datasource I get an error message about a syntax error near page 1 at 'Select * from [categories]'. how to use an ODBC (MySQL) datasource in ASP.NET?
I did all the instructions which are in the following link: [URL] in order to do a connection between MySQL database and ASP.NET but I did not successed. Sometimes, it told me that I have a mistake in the <asp: button> and sometimes it told me that I did a mistake in calling (addImage) method. And this is my whole code:-
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="HW5._Default" %>
<script>
public class DataAccess
{
private string _strConn =
@"Driver= {MySQLODBC 3.51 Driver};SERVER=localhost;DATABASE=test1;";
private OdbcConnection _objConn;
public DataAccess()
{
this._objConn = new OdbcConnection(this._strConn);
}
// This function adds the Images to database
public string addImage(timestamp id, byte [] data,string extension)
{
string strSql = "SELECT * FROM File";
DataSet ds = new DataSet("Image");
OdbcDataAdapter tempAP = new OdbcDataAdapter(strSql,this._objConn);
OdbcCommandBuilder objCommand = new OdbcCommandBuilder(tempAP);
tempAP.Fill(ds,"Table");
try
{
this._objConn.Open();
DataRow objNewRow = ds.Tables["Table"].NewRow();
objNewRow["Extension"] = extension;
objNewRow["Data"] = buffer;
objNewRow["ID"] = id;
ds.Tables["Table"].Rows.Add(objNewRow);
// trying to update the table to add the image
tempAP.Update(ds,"Table");
}.....................................
Although the below connection string works for Select, Insert and Delete functions I can't get to work with Update.
Returns error 'unable to connect to MySQL hosts'
Sub Edit (sender As Object, e As EventArgs)
Dim myConnection As MySqlConnection[code]...
I have fried a multitude of combinations, also from MySQL site without success.
I am currently making a website on asp.net and i am creating methods using TableAdapter. I am connected to MySql using an ODBC connection. The select * from department will work perfectly for me but when trying to use parameters i am given an error message on the wizard. select * from department where name = @name gives me the error: Error in where clause near '@' unable to parse query text. also tried select * from department where name = ?: this gives me the error: No mapping exists from dbTypeObject to a known Odbc type.
View 3 RepliesHow to run a asp.net with mysql db connection web page in a webserver using mysqlconnector?
View 7 RepliesI have a problem whenever i run my code i get the following error ERROR [42000] [MySQL][ODBC 3.51 Driver][mysqld-5.1.46-community]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' ('b'), ('Manager'), ('c'), ('d'), ('e')' at line 1 my code works with connector/net but my host does not have it installed so i've had to change my code to odbc which they do have, i have found out the syntax is different and changed my code accordingly my code is as follows
[Code]....
I am using microsoft enterprise libarary to connect to mysql using mysql .net connector (latest version 6.2.3)
But i am facing a problem of too many connections and connection pool reached maximum limit issue.
As connection is disposed by enterprise library iteself so i dont close the connection anywhere.
So after two or three hours i found i have 100 mysql connections in sleep mode which are doing nothing and are not being reused from the code .
So i want to ask is there any issue with my code or is there any issue with mysql connector
To start, I am a new web developer. I have been writing C# for about a year, but just recently learning web development. I wrote an application that connects to a MySql database and when I run it on my localhost it wokrs great! I created a ubuntu server on amazon ec2 and it is hosting my MySql server. It is up and running just fine. I created a windows 2008 server instance on amazon ec2 to host my asp.net project. I published my project to my windows server and I went to my public IP address and my site was there! it was so easy...
However, when I went to login, I recieved this error: Could not load file or assembly 'MySql.Data, Version=6.3.5.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' or one of its dependencies. The system cannot find the file specified. I made sure the correct connector was installed on ym server. I have the most recent mysql connector installed. I do not know how the publish actually works. I saw some forum posts that said maybe I was missing DLLs from my bin directory but I cannot even find my bin directory for my project on the server. I also saw some posts about changing the web config file, but that was gibberish to me at this level.
[Code]....
I can check whether username exists or not successfully but not for email. any ideas why it isn't working? Error message was that i did not close my connection. using System;
My code is to update a record if it already exists in database else insert as a new record. My code is as follows:
protected void Button3_Click(object sender, EventArgs e)
{
OdbcConnection MyConnection = new OdbcConnection("Driver={MySQL ODBC 3.51 Driver};Server=localhost;Database=testcase;User=root;Password=root;Option=3;");
MyConnection.Open();
String MyString = "select fil_no,orderdate from temp_save where fil_no=? and orderdate=?";
OdbcCommand MyCmd = new OdbcCommand(MyString, MyConnection);
MyCmd.Parameters.AddWithValue("", HiddenField4.Value);
MyCmd.Parameters.AddWithValue("", TextBox3.Text);
using (OdbcDataReader MyReader4 = MyCmd.ExecuteReader())
{
//**
if (MyReader4.Read())
{
String MyString1 = "UPDATE temp_save SET order=? where fil_no=? AND orderdate=?";
OdbcCommand MyCmd1 = new OdbcCommand(MyString1, MyConnection);
MyCmd1.Parameters.AddWithValue("", Editor1.Content.ToString());
MyCmd1.Parameters.AddWithValue("", HiddenField1.Value);
MyCmd1.Parameters.AddWithValue("", TextBox3.Text);
MyCmd1.ExecuteNonQuery();
}
else
{
// set the SQL string
String strSQL = "INSERT INTO temp_save (fil_no,order,orderdate) " +
"VALUES (?,?,?)";
// Create the Command and set its properties
OdbcCommand objCmd = new OdbcCommand(strSQL, MyConnection);
objCmd.Parameters.AddWithValue("", HiddenField4.Value);
objCmd.Parameters.AddWithValue("", Editor1.Content.ToString());
objCmd.Parameters.AddWithValue("", TextBox3.Text);
// execute the command
objCmd.ExecuteNonQuery();
}
}
}
I am getting the error as: ERROR [42000] [MySQL][ODBC 3.51 Driver][mysqld-5.1.51-community]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'order,orderdate) VALUES ('04050040272009',' &' at line 1
The datatype for fields in table temp_save are:
fil_no-->INT(15)( to store a 15 digit number)
order-->LONGTEXT(to store contents from HTMLEditor(ajax control))
orderdate-->DATE(to store date)
<add key="DatabaseString" value="DRIVER={MySQL ODBC 5.1 Driver};SERVER=PARAM;DATABASE=SiteForum;UID=root;PASSWORD=root;OPTION=3;" />
<add key="DatabaseType" value="MySQL" />System.Data.Odbc.OdbcException: ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified.
System.Data.Odbc.OdbcException: ERROR [IM002] [Microsoft][ODBC Driver Manager
I am working on an ASP.NET C# web application in Visual Web Developer Express 08', with MySql database.
Everything works just fine, except one problem that drives me crazy for few weeks...
My application randomaly (or not) stop responding, or just freezing for couple of minutes.
I am sure that the problem is connected somehow to my connection with MySql db.
In the debug window in VWD I get over and over the line:
"A first chance exception of type 'MySql.Data.MySqlClient.MySqlException' occurred in MySql.Data.dll"
Note that in each page load I call a function that kills all sleeping MySql connections, so I don't really think that my problem is 'too many connections'.
The error isn't constant, and not occures only in one page, it occures in many pages (that contains mysql access code), randomaly.
I made a website with mysql back end, it all goes dandy on my dev machineI got all the connectors required, copied the dll files in bin.Now the iis server doesn't recognize drivers and give me this error ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
now the iis server got the drivers connector from mysql website andinstalled even the datamanager from webinstaller
i bind a dropdownlist to a database and later on, on button click i connect to database to get some value in a label. My 1st part works fine but when i try to do the second part i get the error message as
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.SqlDataReader.ConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader() at _Default.Button1_Click(Object sender, EventArgs e) in c:Documents and SettingsaMy DocumentsVisual Studio 2008WebSitesoolbar1Default.aspx.cs:line 56
My code is:
using System;
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;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
try
{
SqlConnection myConn = new SqlConnection("Server=localhost;Database=testcase;Integrated Security=SSPI");
SqlCommand myCmd = new SqlCommand("select skey,casecode from casetype", myConn);
myConn.Open();
SqlDataReader myReader = myCmd.ExecuteReader();
//Set up the data binding.
DropDownList3.DataSource = myReader;
DropDownList3.DataTextField = "skey";
DropDownList3.DataValueField = "casecode";
DropDownList3.DataBind();
//Close the connection.
//myConn.Close();
//myReader.Close();
//Add the item at the first position.
DropDownList3.Items.Insert(0, "<-- Select -->");
}
catch (Exception ex)
{
Response.Write(ex.StackTrace);
}
}
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
SqlConnection myConn1 = new SqlConnection("Server=localhost;Database=testcase;Integrated Security=SSPI");
SqlCommand myCmd1 = new SqlCommand("select casename,skey from casetype where skey=?", myConn1);
myConn1.Open();
SqlDataReader myReader1 = myCmd1.ExecuteReader();
String type = DropDownList3.SelectedItem.Text;
myCmd1.Parameters.AddWithValue("?", type);
}
catch (Exception exw)
{
Response.Write(exw.StackTrace);
}
}
}
I have been trying to create a sql statement that uses a subquery to join 2 oracle tables to create a strongly typed table adapter. For example:
Select productName, (select categoryName from categories where categories.category_id = products.category_id) as Category from Products
The ASP .Net tutorial I am working through recommends using subqueries instead of joins for the insert, update and delete commands to be automatically generated by Visual Studio 2010. When I click Finish in the table adapter wizard I get the following error (I am using MySQL version 5.1 and the MySQL Data Connector 6.3.5)
Generated SELECT statement.
Error in SELECT clause: expression near 'SELECT'.
Error in SELECT clause: expression near 'FROM'.
Missing FROM clause.
Error in SELECT clause: expression near','.
Unable to parse query text.
i was just using mysql i installed mysql and mysql net connector. its installed successfully but unable tp add to references.
View 3 RepliesI'm developing an ASP.NET app with a MySQL backend, using the MySQL Connector Net 6.2.3. I have a DetailsView with an insert command that is throwing the error:MySql.Data.MySqlClient.MySqlException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?,?,?,?,?,?,?,?)' at line 1My code is:
[Code]....
If I hardcode values into the insert statement, it works fine. But when I put the ? placeholder in, it throws the error. Can anyone help me pinpoint the problem or offer a workaround solution?
I have used ASD.NET code using SQL Database for Transaction operation successfully. By changing the Database Code to interface with MYSQL an Error occurs. If I remove the Transaction Code from within the the application, it works OK by displaying the MYSQL data (Read Only) in the layout of the application. I am using Mysql Essential-4.1.22-win32 and MYSQL Connector ODBC-3.51.2. My objective is to EDIT the MYSQL Data.
View 8 RepliesI am new in Asp.net with Oracle and not build proper connection in it.
View 2 RepliesI'm using Visual Studio 2008, and my database is SQL Server 2000.
I want to add a connection to the Server Explorer in VS. The Data source is Microsoft SQL Server (SqlClient). After entering in all my information and I click Test Connection, it is successful.
But when I click OK, I get the error:
Unable to add data connection. ExecuteScalar requires an open and available connection. The connection's current state is closed.
I am also having the same problem while establishing a connection in mysql and asp.net..So how do i solve it...
View 5 RepliesI just moved to a new 2008 64 Bit Server. We are using MySQL, now also the 64 Bit version. Now I found out that there is a 64 Bit ODCB Driver, but not an 64 Bit Net/Connector.
Is that an issue or is the .NET Connector by default 32 and 64 Bit?
Can anybody tell me what is the alternative of CTS(Common table expression in SQL Server 2005) in MySQL
View 1 Replies