i dont know how to set the field to blank field instead of null
if i insert record, and don't input some field, then the field will display null
how to remove null value by default in mysql db.
Using MySQL 5.
In my SAP.NEt project, defined a constant:
public static DateTime NullDateTime = DateTime.MinValue;
I have a function:
protected static DateTime GetDateTime(DataRow row, string columnName)
{
return (row[columnName] != DBNull.Value) ?
Convert.ToDateTime(row[columnName]) :
Globals.NullDateTime;
}
In the source code:
public DateTime StationFeedTime{ get; set; }
StationFeedTime = GetDateTime(row, "StationFeedTime");
I ran a SQL to fetch records from MySQL, this field is Time field in MySQL.
Got an exception inside the function:
Unable to cast object of type 'System.TimeSpan' to type 'System.IConvertible'.
i was just using mysql i installed mysql and mysql net connector. its installed successfully but unable tp add to references.
View 3 RepliesI developed a web site more then a year ago with .net2.0/c#/mssql 2005. it works fine but i was asked to replace mssql with mysql.
I wrote a class to complete data access works (unfortunately, I didnt use nhibernate or other data access tools :((
I edited the class to use System.Data.Odbc objects rather than System.Data.SqlClient.
It works fine in selecting data but not manipulating data. when i try to insert new data it adds null data for all fields in the table.
in debug mode, i noticed that it might be caused by OdbcParameter but not sure.
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 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 RepliesI want to use MVC 2 with MySQL database. Is it possible?because my shared hosting limits the size of SQL Server database, but there is no limit on Size of MySQL database.MySQL seems to take less disk space than SQL Server database which is costly on the Internet.
View 1 Repliesi have populated the gridview dynamically and set the ShowDeleteButton = true.. i have the delete command but i cant delete the specific row i wanted to delete..
here is my gridview code:
<asp:GridView ID="GridView1" runat="server" ShowDeleteButton="true" Width="540px"
AutoGenerateDeleteButton="True" GridLines="None">
and here is the code behind:
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
string ann = (GridView1.DataKeys[e.RowIndex].Values[3].ToString());
MySqlCommand update = new MySqlCommand("DELETE FROM announcement where ID = '"+ann+"'", conn);
[Code]....
how to get the values of the row that i want to delete.
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");
}.....................................
how to connect mysql database in asp.net?
I am install mysql 5.0 then i install sqlyog.
After that i create the database sample in mysql with the help of sqlyog.
I want to connect the database in asp.net & display it on gridview.
[Code]....
How we set the connection string in mysql for use on aspx page?
I'm trying to apply this example to my website.They use SQLServer in this link[URL]string sql = "Select * from Country Where Country_Name like @prefixText";i have to change the last part( like @prefix ) so that it wont give any errors for MySQL
View 12 RepliesIs there any way to import XLS data into MySQL database which is have similar table structure..?
View 2 Replieshow to do import an excel file into my MYSQL database in ASP.net C# ?
View 4 Replieshow can i backup mysql database on button click by giving specific path and restore the database is there any way
View 2 Replies<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 trying to connect asp.net with mysql on remote pc. When i am connecting asp.net with localhost mysql it is working properly but when i change "localhost" with IP address it show error.
View 4 RepliesI have the following piece of code in my web.config file.. I am trying to connect to a MySQL database. The code compiles fine and when I am ruuning the website I come across this error - 'Keyword not supported: 'server'.':
[Code]....
I´m involved in a project that requires MySQL interaction, and I´m designing (or programming) the front end interface. SCENARIO: I´ve a MySQL database. (Now... Imagine a Webpage.aspx). I have a table inside the page with 2 rows: The first row has 3 columns... yes, cells!!, and the another one has no columns. In the first cell (1 row, 1 column) I have a treeview with a panoramic of my database (Treeview-Datasource: XML file that I build by myself with the hierarchy of my database). Then, in the 2nd cell (1 row, 2 column) I have a Radiobuttonlist; the aim of this cell is show only the name of every data placed in the selected entity (located in the treeview). And in the third cell (1 row, 3 column) I have 3 buttons: the first one is "NEW" (Should create a new item in the entity of the database - selected in the treeview) the second one is "EDIT" (Should edit the item of my database_entity selected in the radiobuttonlist)
And the third one is "SAVE"... (No words!!)
In the fourth cell (2 row, unique column)I have a FormView. To fill data, to arrange it in two columns, and to show textboxes allowing me introduce information to perform the button actions. I´m new in this, but I´ve seen that probably, I can make it using views (programming them in the database) or using XML files (declarating and querying my database as well as I want) but, in any case, the two ways requires build a view or xml file for every entity of my database that I want modify. I´m Sure that all of us know a short method or something.
I try to work with MYSql (because it's free) and I saw that the colums are different then when they are exployed in MS SQL?
Why is this? The most strange differents is that in MySQL there is no applicationId in the membership table.
This differents in tables cost me more time to do a export and import from MS SQL to MySQL.
I added refernece MySql.Data to my project. My web.config looks like that:
<?xml version="1.0"?>
<configuration>
<connectionStrings>
</connectionStrings>
<system.web>
<compilation>
<assemblies>
<add assembly="MySql.Data, Version=6.1.4.0, Culture=neutral, PublicKeyToken=C5687FC88969C44D"/>
</assemblies>
</compilation></system.web></configuration>
But when in ServerExplorer I try "Add Connection..." I can't find "MySql Database" in the "Choose Data Source" dialog box?
I am new to mysql, i want to use the MySql database to work with the login control.
View 1 RepliesI'd like to use mySQL with a administration tool. Which tool should I use on Window Vista?
View 1 Repliestrying to validate my login in using MySql table but will not work
[Code]....