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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.Office.Interop.Excel;
using System.Runtime.InteropServices;
namespace CSharpToMySQL
{
public partial class frmMain : Form
{
private System.Data.Odbc.OdbcConnection OdbcCon;
private System.Data.Odbc.OdbcCommand OdbcCom;
private System.Data.Odbc.OdbcCommand OdbcComAlt;
private System.Data.Odbc.OdbcDataReader OdbcDR;
private Microsoft.Office.Interop.Excel.Workbook wb;
private Microsoft.Office.Interop.Excel.Worksheet sh;
private Microsoft.Office.Interop.Excel.Range rng;
private string ConStr;
private Form frmAbout;
public frmMain()
{
InitializeComponent();
}
private void btnConnect_Click(object sender, EventArgs e)
{
ConStr = "DRIVER={MySQL ODBC 3.51 Driver};SERVER=" + txtIP.Text + ";PORT=" + txtPort.Text + ";DATABASE=" + txtDatabase.Text + ";UID=" + txtUsername.Text + ";PWD=" + txtPassword.Text + ";OPTION=3";
OdbcCon = new System.Data.Odbc.OdbcConnection(ConStr);
btnListTables.Enabled = true;
btnShowTableColumns.Enabled = true;
btnShowProductPrice.Enabled = true;
btnPriceUpdate.Enabled = true;
try
{
txtLog.AppendText("Openning connection...\r\n");
if (OdbcCon.State == ConnectionState.Closed)
{
OdbcCon.Open();
}
txtLog.AppendText("Connection opened\r\n");
}
catch (System.Data.Odbc.OdbcException Ex)
{
txtLog.AppendText(Ex.Message + "\r\n");
MessageBox.Show("Could not access the database.\r\nPlease make sure you completed the fields with the correct information and try again.\r\n\r\nMore details:\r\n" + Ex.Message, "Database connection error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void btnListTables_Click(object sender, EventArgs e)
{
if (OdbcCon.State == ConnectionState.Open)
{
OdbcCom = new System.Data.Odbc.OdbcCommand("SHOW TABLES", OdbcCon);
OdbcDR = OdbcCom.ExecuteReader();
txtLog.AppendText("Tables inside " + txtDatabase.Text + ":\r\n");
while (OdbcDR.Read())
{
txtLog.AppendText(">> " + OdbcDR[0] + "\r\n");
}
}
}
private void btnShowTablesColumns_Click(object sender, EventArgs e)
{
if (OdbcCon.State == ConnectionState.Open)
{
OdbcCom = new System.Data.Odbc.OdbcCommand("SHOW COLUMNS FROM " + txtTable.Text, OdbcCon);
OdbcDR = OdbcCom.ExecuteReader();
txtLog.AppendText("Columns inside " + txtTable.Text + ":\r\n");
while (OdbcDR.Read())
{
txtLog.AppendText(">> " + OdbcDR[0] + "\r\n");
}
}
}
private void btnShowProductPrice_Click(object sender, EventArgs e)
{
if (OdbcCon.State == ConnectionState.Open)
{
OdbcCom = new System.Data.Odbc.OdbcCommand("SELECT `products_price` FROM `products` WHERE `products_model`='" + txtProduct.Text + "'", OdbcCon);
OdbcDR = OdbcCom.ExecuteReader();
txtLog.AppendText("The Price for " + txtProduct.Text + " is:\r\n");
while (OdbcDR.Read())
{
txtLog.AppendText(">> " + OdbcDR[0] + "\r\n");
}
}
}
private void btnPriceUpdate_Click(object sender, EventArgs e)
{
if (OdbcCon.State == ConnectionState.Open)
{
OdbcCom = new System.Data.Odbc.OdbcCommand("UPDATE `products` SET `products_price`='" + txtPrice.Text + "' WHERE `products_model`='" + txtProduct.Text + "'", OdbcCon);
OdbcDR = OdbcCom.ExecuteReader();
OdbcComAlt = new System.Data.Odbc.OdbcCommand("SELECT `products_price` FROM `products` WHERE `products_model`='" + txtProduct.Text + "'", OdbcCon);
OdbcDR = OdbcComAlt.ExecuteReader();
txtLog.AppendText("The New Price for " + txtProduct.Text + " is:\r\n");
while (OdbcDR.Read())
{
txtLog.AppendText(">> " + OdbcDR[0] + "\r\n");
}
}
}
private void btnExcelValue_Click(object sender, EventArgs e)
{
if (OdbcCon.State == ConnectionState.Open)
{
wb = Microsoft.Office.Interop.Excel.Workbooks.Open(@"c:\test.xls",1);
sh = (Microsoft.Office.Interop.Excel.Worksheet)wb.Sheets(1);
rng = sh.get_Range("A1","A1");
rng.Value2.ToString();
txtLog.AppendText("The Value is " + rng.Value2.ToString());
}
}
private void btnDisconnect_Click(object sender, EventArgs e)
{
try
{
txtLog.AppendText("Closing connection...\r\n");
if (OdbcCon.State == ConnectionState.Open)
{
OdbcCon.Close();
}
txtLog.AppendText("Connection Closed\r\n");
}
catch (System.Data.Odbc.OdbcException Ex)
{
txtLog.AppendText(Ex.Message + "\r\n");
MessageBox.Show("Could not close the database.\r\n" + Ex.Message, "Database connection error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void mnuExit_Click(object sender, EventArgs e)
{
System.Windows.Forms.Application.Exit();
}
private void mnuAbout_Click(object sender, EventArgs e)
{
frmAbout = new frmAbout();
frmAbout.ShowDialog(this);
frmAbout.Dispose();
}
private void txtLog_TextChanged(object sender, EventArgs e)
{
}
private void txtDatabase_TextChanged(object sender, EventArgs e)
{
}
private void txtTable_TextChanged(object sender, EventArgs e)
{
}
private void txtProduct_TextChanged(object sender, EventArgs e)
{
}
private void txtPrice_TextChanged(object sender, EventArgs e)
{
}
private void lblDatabase_Click(object sender, EventArgs e)
{
}
private void lblTable_Click(object sender, EventArgs e)
{
}
private void lblProduct_Click(object sender, EventArgs e)
{
}
private void lblPrice_Click(object sender, EventArgs e)
{
}
}
}
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