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using System;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace AddressBook
{
public partial class frmSQLSetting : Form
{
SqlConnection ConnectDB;
public frmSQLSetting()
{
InitializeComponent();
lstAuthenticationType.SelectedIndex = 0;
if (((ConnectionTypes)DataConnection.ConnectionType) == ConnectionTypes.SQLConnection)
{
txtDataSource.Text = DataConnection.DataSource;
txtUserName.Text = DataConnection.UserName;
txtPassword.Text = DataConnection.Password;
lstAuthenticationType.SelectedIndex = DataConnection.SQLAuthenticationType;
GetDBNames();
lstDatabaseList.SelectedItem = DataConnection.Database;
}
}
void Authentication_SelectedIndexChanged(object sender, EventArgs e)
{
if (lstAuthenticationType.SelectedIndex == 0)
txtUserName.Enabled = txtPassword.Enabled = false;
else txtUserName.Enabled = txtPassword.Enabled = true;
}
void GetDBNames(object sender, EventArgs e)
{
GetDBNames();
}
void GetDBNames()
{
lstDatabaseList.Items.Clear();
ConnectDB = new SqlConnection(GetConnectionString());
try
{
ConnectDB.Open();
}
catch (Exception) { return; }
SqlCommand ExecCmd = new SqlCommand("SELECT NAME FROM SYSDATABASES", ConnectDB);
SqlDataReader Reader = ExecCmd.ExecuteReader();
while (Reader.Read())
{
lstDatabaseList.Items.Add(Reader.GetString(0));
}
ConnectDB.Close();
}
string GetConnectionString()
{
if (lstAuthenticationType.SelectedIndex == 1)
return "Data Source=" + txtDataSource.Text + ";Initial Catalog=master;User ID=" + txtUserName.Text + ";Password=" + txtPassword.Text;
else return "Data Source=" + txtDataSource.Text + ";Initial Catalog=master;Integrated Security=True";
}
void SaveChanges(object sender, EventArgs e)
{
if (lstDatabaseList.SelectedItem == null) { MessageBox.Show("Please select a valid connection configuration.", "Invalid Connection"); return; }
DataConnection.ConnectionType = (int)ConnectionTypes.SQLConnection;
DataConnection.SQLAuthenticationType = lstAuthenticationType.SelectedIndex;
DataConnection.DataSource = txtDataSource.Text;
DataConnection.Database = lstDatabaseList.SelectedItem.ToString();
DataConnection.UserName = txtUserName.Text;
DataConnection.Password = txtPassword.Text;
DataConnection.SaveSettings();
}
void ChangesMade(object sender, EventArgs e)
{
lstDatabaseList.Items.Clear();
}
void Login_Cancel_Click(object sender, EventArgs e)
{
Close();
}
}
}
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Completed B.Com(CS) at DGVC and GNIIT Software Engineering at NIIT. Resident at Chennai and working as a Software Engineer.
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