?? form1.cs
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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using T = System.Diagnostics.Trace;
using SD=System.Data; // general DB classes
using SQL=System.Data.SqlClient; // Microsoft SQL Server databases
using SWF=System.Windows.Forms;
namespace BankCustomerApp
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox txtFirstName;
private System.Windows.Forms.TextBox txtLastName;
private System.Windows.Forms.TextBox txtBalance;
private System.Windows.Forms.ListBox lstCustomers;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox txtAmount;
private System.Windows.Forms.Button cmdDeposit;
private System.Windows.Forms.Button cmdWithdrawal;
private System.Windows.Forms.MainMenu mainMenu1;
private System.Windows.Forms.MenuItem mnuFile;
private System.Windows.Forms.MenuItem mnuFileFindByID;
private System.Windows.Forms.MenuItem mnuFileDeleteSelected;
private System.Windows.Forms.MenuItem menuItem4;
private System.Windows.Forms.MenuItem mnuFileExit;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.lstCustomers = new System.Windows.Forms.ListBox();
this.txtFirstName = new System.Windows.Forms.TextBox();
this.txtLastName = new System.Windows.Forms.TextBox();
this.txtBalance = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.txtAmount = new System.Windows.Forms.TextBox();
this.cmdDeposit = new System.Windows.Forms.Button();
this.cmdWithdrawal = new System.Windows.Forms.Button();
this.mainMenu1 = new System.Windows.Forms.MainMenu();
this.mnuFile = new System.Windows.Forms.MenuItem();
this.mnuFileFindByID = new System.Windows.Forms.MenuItem();
this.mnuFileDeleteSelected = new System.Windows.Forms.MenuItem();
this.menuItem4 = new System.Windows.Forms.MenuItem();
this.mnuFileExit = new System.Windows.Forms.MenuItem();
this.SuspendLayout();
//
// lstCustomers
//
this.lstCustomers.ItemHeight = 24;
this.lstCustomers.Location = new System.Drawing.Point(24, 24);
this.lstCustomers.Name = "lstCustomers";
this.lstCustomers.Size = new System.Drawing.Size(184, 316);
this.lstCustomers.Sorted = true;
this.lstCustomers.TabIndex = 0;
this.lstCustomers.TabStop = false;
this.lstCustomers.SelectedIndexChanged += new System.EventHandler(this.lstCustomers_SelectedIndexChanged);
//
// txtFirstName
//
this.txtFirstName.Location = new System.Drawing.Point(248, 32);
this.txtFirstName.Name = "txtFirstName";
this.txtFirstName.ReadOnly = true;
this.txtFirstName.Size = new System.Drawing.Size(176, 29);
this.txtFirstName.TabIndex = 1;
this.txtFirstName.Text = "";
//
// txtLastName
//
this.txtLastName.Location = new System.Drawing.Point(248, 72);
this.txtLastName.Name = "txtLastName";
this.txtLastName.ReadOnly = true;
this.txtLastName.Size = new System.Drawing.Size(176, 29);
this.txtLastName.TabIndex = 2;
this.txtLastName.Text = "";
//
// txtBalance
//
this.txtBalance.Location = new System.Drawing.Point(248, 112);
this.txtBalance.Name = "txtBalance";
this.txtBalance.ReadOnly = true;
this.txtBalance.Size = new System.Drawing.Size(176, 29);
this.txtBalance.TabIndex = 3;
this.txtBalance.Text = "";
//
// label1
//
this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label1.Location = new System.Drawing.Point(248, 176);
this.label1.Name = "label1";
this.label1.TabIndex = 4;
this.label1.Text = "amount:";
//
// txtAmount
//
this.txtAmount.Location = new System.Drawing.Point(248, 208);
this.txtAmount.Name = "txtAmount";
this.txtAmount.Size = new System.Drawing.Size(168, 29);
this.txtAmount.TabIndex = 5;
this.txtAmount.Text = "";
//
// cmdDeposit
//
this.cmdDeposit.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.cmdDeposit.Location = new System.Drawing.Point(256, 256);
this.cmdDeposit.Name = "cmdDeposit";
this.cmdDeposit.Size = new System.Drawing.Size(152, 32);
this.cmdDeposit.TabIndex = 6;
this.cmdDeposit.Text = "Deposit";
this.cmdDeposit.Click += new System.EventHandler(this.cmdDeposit_Click);
//
// cmdWithdrawal
//
this.cmdWithdrawal.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.cmdWithdrawal.Location = new System.Drawing.Point(256, 304);
this.cmdWithdrawal.Name = "cmdWithdrawal";
this.cmdWithdrawal.Size = new System.Drawing.Size(152, 32);
this.cmdWithdrawal.TabIndex = 7;
this.cmdWithdrawal.Text = "Withdrawal";
this.cmdWithdrawal.Click += new System.EventHandler(this.cmdWithdrawal_Click);
//
// mainMenu1
//
this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.mnuFile});
//
// mnuFile
//
this.mnuFile.Index = 0;
this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.mnuFileDeleteSelected,
this.mnuFileFindByID,
this.menuItem4,
this.mnuFileExit});
this.mnuFile.Text = "&File";
//
// mnuFileFindByID
//
this.mnuFileFindByID.Index = 1;
this.mnuFileFindByID.Text = "&Find by ID...";
this.mnuFileFindByID.Click += new System.EventHandler(this.mnuFileFindByID_Click);
//
// mnuFileDeleteSelected
//
this.mnuFileDeleteSelected.Index = 0;
this.mnuFileDeleteSelected.Text = "&Delete selected";
this.mnuFileDeleteSelected.Click += new System.EventHandler(this.mnuFileDeleteSelected_Click);
//
// menuItem4
//
this.menuItem4.Index = 2;
this.menuItem4.Text = "-";
//
// mnuFileExit
//
this.mnuFileExit.Index = 3;
this.mnuFileExit.Text = "E&xit";
this.mnuFileExit.Click += new System.EventHandler(this.mnuFileExit_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(10, 22);
this.ClientSize = new System.Drawing.Size(446, 367);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.cmdWithdrawal,
this.cmdDeposit,
this.txtAmount,
this.label1,
this.txtBalance,
this.txtLastName,
this.txtFirstName,
this.lstCustomers});
this.Font = new System.Drawing.Font("Microsoft Sans Serif", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Fixed3D;
this.MaximizeBox = false;
this.Menu = this.mainMenu1;
this.Name = "Form1";
this.Text = "Bank Customer App";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
#endregion
private void Form1_Load(object sender, System.EventArgs e)
{
SQL.SqlConnection dbConn = null;
SQL.SqlDataReader dbReader = null;
try
{
string sConnect;
sConnect = string.Format("Server={0};Database={1};{2}",
"localhost",
"Sales",
"Integrated Security=SSPI"); //id=sa;pwd=???? dbConn = new SQL.SqlConnection(sConnect);
dbConn.Open();
SWF.MessageBox.Show( dbConn.State.ToString() );
string sql; BankCustomer c;
/*
//parameter begin
sql = "Select * From Customers Where CID=@CID Order By LastName Asc, FirstName Asc;";
SQL.SqlCommand dbCmd;
dbCmd = new SQL.SqlCommand(sql, dbConn);
dbCmd.Parameters.Add("@CID", SqlDbType.BigInt);
dbCmd.Parameters[0].Value = 1;
//parameter end
*/
/*
//procedure begin
SQL.SqlCommand dbCmd =dbConn.CreateCommand();
dbCmd.CommandText = "GetCustomer";
dbCmd.CommandType = CommandType.StoredProcedure;
dbCmd.Parameters.Add("@CID", SqlDbType.BigInt);
dbCmd.Parameters[0].Value = 1;
//precedure end
*/
//Transaction
SQL.SqlTransaction txn = dbConn.BeginTransaction();
string strSQL = "INSERT INTO Customers VALUES(100,'Hui','Yu',1000000,1000000,'01-Jan-2005','money')";
SQL.SqlCommand dbCmd;
dbCmd = new SQL.SqlCommand(strSQL, dbConn,txn);
int intRecord = dbCmd.ExecuteNonQuery();
if(intRecord ==1)
{
SWF.MessageBox.Show( "Update Successful");
txn.Commit();
}
else
{
SWF.MessageBox.Show( "Update Failed");
txn.Rollback();
}
/*
dbReader = dbCmd.ExecuteReader();
while (dbReader.Read()) // retrieve records 1-by-1...
{
c = new BankCustomer(dbReader["FirstName"].ToString(),
dbReader["LastName"].ToString(),
System.Convert.ToDecimal(dbReader["AcctBalance"]));
Globals.Customers.Add(c);
}*/
}
catch(Exception ex)
{
throw ex;
}
finally
{
try{ dbReader.Close(); }
catch{}
try{ dbConn.Close(); }
catch{}
}
SWF.MessageBox.Show( dbConn.State.ToString() );
// bind customers to list box for display
this.lstCustomers.DataSource = Globals.Customers;
this.lstCustomers.SelectedIndex = -1;
}
private void lstCustomers_SelectedIndexChanged(object sender, System.EventArgs e)
{
BankCustomer bc;
bc = (BankCustomer) this.lstCustomers.SelectedItem;
if (bc == null)
return;
T.WriteLineIf(Globals.Trace, "User selected '" + bc.ToString() + ".");
T.Flush();
//
// bind selected object to text boxes for access...
//
this.txtFirstName.DataBindings.Clear();
this.txtLastName.DataBindings.Clear();
this.txtBalance.DataBindings.Clear();
this.txtFirstName.DataBindings.Add("Text", bc, "FirstName");
this.txtLastName.DataBindings.Add("Text", bc, "LastName");
this.txtBalance.DataBindings.Add("Text", bc, "FormattedBalance");
}
private void cmdDeposit_Click(object sender, System.EventArgs e)
{
BankCustomer bc;
bc = (BankCustomer) this.lstCustomers.SelectedItem;
if (bc == null)
{
MessageBox.Show("Please select a customer first.");
return;
}
decimal amt;
amt = decimal.Parse( this.txtAmount.Text );
T.Indent();
T.WriteLineIf(Globals.Trace, "About to deposit " + amt.ToString());
T.Flush();
bc.Deposit(amt);
this.txtBalance.Text = bc.GetFormattedBalance();
T.WriteLineIf(Globals.Trace, "New balance: " + bc.GetFormattedBalance());
T.Flush();
T.Unindent();
MessageBox.Show("Deposited.");
}
private void cmdWithdrawal_Click(object sender, System.EventArgs e)
{
BankCustomer bc;
bc = (BankCustomer) this.lstCustomers.SelectedItem;
if (bc == null)
{
MessageBox.Show("Please select a customer first.");
return;
}
decimal amt;
amt = decimal.Parse( this.txtAmount.Text );
T.Indent();
T.WriteLineIf(Globals.Trace, "About to withdraw " + amt.ToString());
T.Flush();
bc.Withdraw(amt);
this.txtBalance.Text = bc.GetFormattedBalance();
T.WriteLineIf(Globals.Trace, "New balance: " + bc.GetFormattedBalance());
T.Flush();
T.Unindent();
MessageBox.Show("Withdrawn.");
}
private void cmdFindByID_Click(object sender, System.EventArgs e)
{
// show form modally, then have .NET dispose for us...
using (FormInputID frm = new FormInputID())
{
DialogResult dr;
int id;
dr = frm.ShowDialog();
if (dr == DialogResult.OK)
{
id = frm.CustomerID;
MessageBox.Show("Simulating search for customer " + id + "...", "Bank Customer App", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
private void mnuFileExit_Click(object sender, System.EventArgs e)
{
this.Close();
}
private void mnuFileFindByID_Click(object sender, System.EventArgs e)
{
// show form modally, then have .NET dispose for us...
using (FormInputID frm = new FormInputID())
{
DialogResult dr;
int id;
dr = frm.ShowDialog();
if (dr == DialogResult.OK)
{
id = frm.CustomerID;
MessageBox.Show("Simulating search for customer " + id + "...", "Bank Customer App", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
private void mnuFileDeleteSelected_Click(object sender, System.EventArgs e)
{
BankCustomer bc;
bc = (BankCustomer) this.lstCustomers.SelectedItem;
if (bc == null)
{
MessageBox.Show("Please select a customer to delete...");
return;
}
SQL.SqlConnection dbConn = null;
try
{
string sConnect;
sConnect = string.Format("Server={0};Database={1};{2}",
"localhost",
"Sales",
"Integrated Security=SSPI"); // 搖id=sa;pwd=???? dbConn = new SQL.SqlConnection(sConnect);
//
// be sure to escape values when working with text fields!
//
string sql;
sql = string.Format("Delete from Customers where FirstName='{0}' and LastName='{1}';",
bc.FirstName.Replace("'", "''"),
bc.LastName.Replace("'", "''"));
SQL.SqlCommand dbCmd;
dbCmd = new SQL.SqlCommand(sql, dbConn);
int rows;
dbConn.Open();
rows = dbCmd.ExecuteNonQuery();
dbConn.Close();
if (rows != 1)
throw new System.ApplicationException("Delete failed?!");
// update global collection and rebind to list box...
Globals.Customers.Remove(bc);
this.resetGUI();
MessageBox.Show("Deleted!");
}
catch(Exception ex)
{
throw ex;
}
finally
{
try{ dbConn.Close(); } catch{}
}
}
private void resetGUI()
{
this.lstCustomers.DataSource = null;
this.lstCustomers.DataSource = Globals.Customers;
foreach (Control c in this.Controls)
if (c is TextBox)
((TextBox)c).Clear();
}
}//class
}//namespace
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