I was able to Inserts and Updates .
I've downloaded this file:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MySql.Data.MySqlClient;
using System.Data;
namespace MySQLClass
{
//Don't forget to add the MySQL.Data dll to your projects references
//It can be downloaded for free from MySQL's official website.
//Link to the .NET Connector (MS Installer) http://dev.mysql.com/downloads/connector/net/
class MySQLClient
{
MySqlConnection conn = null;
#region Constructors
public MySQLClient(string hostname, string database, string username, string password)
{
conn = new MySqlConnection("host=" + hostname + ";database=" + database +";username=" + username +";password=" + password +";");
}
public MySQLClient(string hostname, string database, string username, string password, int portNumber)
{
conn = new MySqlConnection("host=" + hostname + ";database=" + database + ";username=" + username + ";password=" + password + ";port=" + portNumber.ToString() +";");
}
public MySQLClient(string hostname, string database, string username, string password, int portNumber, int connectionTimeout)
{
conn = new MySqlConnection("host=" + hostname + ";database=" + database + ";username=" + username + ";password=" + password + ";port=" + portNumber.ToString() + ";Connection Timeout=" + connectionTimeout.ToString() +";");
}
#endregion
#region Open/Close Connection
private bool Open()
{
//This opens temporary connection
try
{
conn.Open();
return true;
}
catch
{
//Here you could add a message box or something like that so you know if there were an error.
return false;
}
}
private bool Close()
{
//This method closes the open connection
try
{
conn.Close();
return true;
}
catch
{
return false;
}
}
#endregion
public void Insert(string table, string column, string value)
{
//Insert values into the database.
//Example: INSERT INTO names (name, age) VALUES('John Smith', '33')
//Code: MySQLClient.Insert("names", "name, age", "'John Smith, '33'");
string query = "INSERT INTO " + table + " (" + column + ") VALUES (" + value + ")";
try
{
if (this.Open())
{
//Opens a connection, if succefull; run the query and then close the connection.
MySqlCommand cmd = new MySqlCommand(query, conn);
cmd.ExecuteNonQuery();
this.Close();
}
}
catch { }
return;
}
public void Update(string table, string SET, string WHERE)
{
//Update existing values in the database.
//Example: UPDATE names SET name='Joe', age='22' WHERE name='John Smith'
//Code: MySQLClient.Update("names", "name='Joe', age='22'", "name='John Smith'");
string query = "UPDATE " + table + " SET " + SET + " WHERE " + WHERE + "";
if (this.Open())
{
try
{
//Opens a connection, if succefull; run the query and then close the connection.
MySqlCommand cmd = new MySqlCommand(query, conn);
cmd.ExecuteNonQuery();
this.Close();
}
catch { this.Close(); }
}
return;
}
public void Delete(string table, string WHERE)
{
//Removes an entry from the database.
//Example: DELETE FROM names WHERE name='John Smith'
//Code: MySQLClient.Delete("names", "name='John Smith'");
string query = "DELETE FROM " + table + " WHERE " + WHERE + "";
if (this.Open())
{
try
{
//Opens a connection, if succefull; run the query and then close the connection.
MySqlCommand cmd = new MySqlCommand(query, conn);
cmd.ExecuteNonQuery();
this.Close();
}
catch { this.Close(); }
}
return;
}
public Dictionary<string, string> Select(string table, string WHERE)
{
//This methods selects from the database, it retrieves data from it.
//You must make a dictionary to use this since it both saves the column
//and the value. i.e. "age" and "33" so you can easily search for values.
//Example: SELECT * FROM names WHERE name='John Smith'
// This example would retrieve all data about the entry with the name "John Smith"
//Code = Dictionary<string, string> myDictionary = Select("names", "name='John Smith'");
//This code creates a dictionary and fills it with info from the database.
string query = "SELECT * FROM " + table + " WHERE " + WHERE + "";
Dictionary<string, string> selectResult = new Dictionary<string, string>();
if (this.Open())
{
MySqlCommand cmd = new MySqlCommand(query, conn);
MySqlDataReader dataReader = cmd.ExecuteReader();
try
{
while (dataReader.Read())
{
for (int i = 0; i < dataReader.FieldCount; i++)
{
selectResult.Add(dataReader.GetName(i).ToString(), dataReader.GetValue(i).ToString());
}
}
dataReader.Close();
}
catch { }
this.Close();
return selectResult;
}
else
{
return selectResult;
}
}
public int Count(string table)
{
//This counts the numbers of entries in a table and returns it as an integear
//Example: SELECT Count(*) FROM names
//Code: int myInt = MySQLClient.Count("names");
string query = "SELECT Count(*) FROM " + table + "";
int Count = -1;
if (this.Open() == true)
{
try
{
MySqlCommand cmd = new MySqlCommand(query, conn);
Count = int.Parse(cmd.ExecuteScalar() + "");
this.Close();
}
catch { this.Close(); }
return Count;
}
else
{
return Count;
}
}
}
}
It turns out that I'm trying to do a query , which I can put in datagridView , but this function is not done. Are there any files that I recommend besides this? Or what can I add here to do something like this:
dataGridView1=Mysql.query("Select * from tabela");