我正在研究库存管理系统。我制作了一个MDI表单，该表单具有一个带有文件的菜单条，该文件具有两个子菜单设置并退出。如果我的连接字符串在我的文档文件夹中退出，则打开登录表单窗口，否则打开设置表单。代码如下。
MDI.cs
namespace IMS
{
public partial class MDI : Form
{
public MDI()
{
InitializeComponent();
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void MDI_Load(object sender, EventArgs e)
{
string path = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
if(File.Exists(path+"\\connection"))
{
Login log = new Login();
MainClass.ShowWindow(log, this);
}
else
{
Setting set = new Setting();
MainClass.ShowWindow(set, this);
}
}
private void settingToolStripMenuItem_Click(object sender, EventArgs e)
{
Setting set = new Setting();
MainClass.ShowWindow(set, this);
}
}
}
MDIDesigner.cs
namespace IMS
{
partial class MDI
{
private System.ComponentModel.IContainer components = null;
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
private void InitializeComponent()
{
this.menuStrip1 = new System.Windows.Forms.MenuStrip();
this.fileToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
this.settingToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
this.exitToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
this.menuStrip1.SuspendLayout();
this.SuspendLayout();
//
// menuStrip1
//
this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.fileToolStripMenuItem});
this.menuStrip1.Location = new System.Drawing.Point(0, 0);
this.menuStrip1.Name = "menuStrip1";
this.menuStrip1.Size = new System.Drawing.Size(697, 24);
this.menuStrip1.TabIndex = 1;
this.menuStrip1.Text = "myMenu";
this.fileToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.settingToolStripMenuItem,
this.exitToolStripMenuItem});
this.fileToolStripMenuItem.Name = "fileToolStripMenuItem";
this.fileToolStripMenuItem.Size = new System.Drawing.Size(37, 20);
this.fileToolStripMenuItem.Text = "File";
this.settingToolStripMenuItem.Name = "settingToolStripMenuItem";
this.settingToolStripMenuItem.ShortcutKeys = ((System.Windows.Forms.Keys)((System.Windows.Forms.Keys.Control | System.Windows.Forms.Keys.S)));
this.settingToolStripMenuItem.Size = new System.Drawing.Size(151, 22);
this.settingToolStripMenuItem.Text = "Setting";
this.settingToolStripMenuItem.Click += new System.EventHandler(this.settingToolStripMenuItem_Click);
//
// exitToolStripMenuItem
//
this.exitToolStripMenuItem.Name = "exitToolStripMenuItem";
this.exitToolStripMenuItem.ShortcutKeys = ((System.Windows.Forms.Keys)((System.Windows.Forms.Keys.Control | System.Windows.Forms.Keys.X)));
this.exitToolStripMenuItem.Size = new System.Drawing.Size(151, 22);
this.exitToolStripMenuItem.Text = "Exit";
this.exitToolStripMenuItem.Click += new System.EventHandler(this.exitToolStripMenuItem_Click);
//
// MDI
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(697, 502);
this.Controls.Add(this.menuStrip1);
this.Font = new System.Drawing.Font("Segoe UI", 8F, System.Drawing.FontStyle.Strikeout, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.IsMdiContainer = true;
this.MainMenuStrip = this.menuStrip1;
this.Name = "MDI";
this.Text = "Welcome";
this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
this.Load += new System.EventHandler(this.MDI_Load);
this.menuStrip1.ResumeLayout(false);
this.menuStrip1.PerformLayout();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.MenuStrip menuStrip1;
private System.Windows.Forms.ToolStripMenuItem fileToolStripMenuItem;
private System.Windows.Forms.ToolStripMenuItem exitToolStripMenuItem;
private System.Windows.Forms.ToolStripMenuItem settingToolStripMenuItem;
}
}
Setting.cs
namespace IMS
{
public partial class Setting : Sample
{
public Setting()
{
InitializeComponent();
}
private void leftPanel_Paint(object sender, PaintEventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void textBox5_TextChanged(object sender, EventArgs e)
{
}
private void SaveBtn_Click(object sender, EventArgs e)
{
string s;
string path = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
if(ISCb.Checked)
{
if(ServerText.Text != "" && DatabaseText.Text != "")
{
s = "Data Source = " + ServerText.Text + "; Initial Catalog = " + DatabaseText.Text + "; Integrated Security = True;";
File.WriteAllText(path + "\\connection", s);
DialogResult dr = MessageBox.Show("Setting Save Successfully......", "Information......", MessageBoxButtons.OK, MessageBoxIcon.Information);
if(dr == DialogResult.OK)
{
Login log = new Login();
MainClass.ShowWindow(log, this, MDI.ActiveForm);
}
}
else
{
MessageBox.Show("Please give complete data to continue..........");
}
}
else
{
if (ServerText.Text != "" && DatabaseText.Text != "" && UserIdText.Text != "" && PasswordText.Text != "")
{
s = "Data Source = " + ServerText.Text + "; Initial Catalog = " + DatabaseText.Text + "; User ID = " +UserIdText.Text+"; Password = "+ PasswordText.Text+";";
File.WriteAllText(path +"\\connection", s);
DialogResult dr = MessageBox.Show("Setting Save Successfully......", "Information......", MessageBoxButtons.OK, MessageBoxIcon.Information);
if (dr == DialogResult.OK)
{
Login log = new Login();
MainClass.ShowWindow(log, this, MDI.ActiveForm);
}
}
else
{
MessageBox.Show("Please give complete data to continue..........");
}
}
}
private void ISCb_CheckedChanged(object sender, EventArgs e)
{
if(ISCb.Checked)
{
UserIdText.Enabled = false;
PasswordText.Enabled = false;
UserIdText.Text = "";
PasswordText.Text = "";
}
else
{
UserIdText.Enabled = true;
PasswordText.Enabled = true;
}
}
}
}
setting.designer.cs
namespace IMS
{
partial class Setting
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (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.label3 = new System.Windows.Forms.Label();
this.ServerText = new System.Windows.Forms.TextBox();
this.DatabaseText = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.textBox3 = new System.Windows.Forms.TextBox();
this.label5 = new System.Windows.Forms.Label();
this.UserIdText = new System.Windows.Forms.TextBox();
this.label6 = new System.Windows.Forms.Label();
this.PasswordText = new System.Windows.Forms.TextBox();
this.label7 = new System.Windows.Forms.Label();
this.ISCb = new System.Windows.Forms.CheckBox();
this.SaveBtn = new System.Windows.Forms.Button();
this.leftPanel.SuspendLayout();
this.panel1.SuspendLayout();
this.RightPanel.SuspendLayout();
this.panel2.SuspendLayout();
this.SuspendLayout();
//
// leftPanel
//
this.leftPanel.Controls.Add(this.SaveBtn);
this.leftPanel.Controls.Add(this.ISCb);
this.leftPanel.Controls.Add(this.PasswordText);
this.leftPanel.Controls.Add(this.label7);
this.leftPanel.Controls.Add(this.UserIdText);
this.leftPanel.Controls.Add(this.label6);
this.leftPanel.Controls.Add(this.textBox3);
this.leftPanel.Controls.Add(this.label5);
this.leftPanel.Controls.Add(this.DatabaseText);
this.leftPanel.Controls.Add(this.label4);
this.leftPanel.Controls.Add(this.ServerText);
this.leftPanel.Controls.Add(this.label3);
this.leftPanel.Size = new System.Drawing.Size(200, 518);
this.leftPanel.Paint += new System.Windows.Forms.PaintEventHandler(this.leftPanel_Paint);
this.leftPanel.Controls.SetChildIndex(this.label3, 0);
this.leftPanel.Controls.SetChildIndex(this.ServerText, 0);
this.leftPanel.Controls.SetChildIndex(this.label4, 0);
this.leftPanel.Controls.SetChildIndex(this.DatabaseText, 0);
this.leftPanel.Controls.SetChildIndex(this.label5, 0);
this.leftPanel.Controls.SetChildIndex(this.textBox3, 0);
this.leftPanel.Controls.SetChildIndex(this.panel1, 0);
this.leftPanel.Controls.SetChildIndex(this.label6, 0);
this.leftPanel.Controls.SetChildIndex(this.UserIdText, 0);
this.leftPanel.Controls.SetChildIndex(this.label7, 0);
this.leftPanel.Controls.SetChildIndex(this.PasswordText, 0);
this.leftPanel.Controls.SetChildIndex(this.ISCb, 0);
this.leftPanel.Controls.SetChildIndex(this.SaveBtn, 0);
//
// RightPanel
//
this.RightPanel.Size = new System.Drawing.Size(561, 518);
//
// label3
//
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(6, 142);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(39, 15);
this.label3.TabIndex = 2;
this.label3.Text = "Server";
//
// ServerText
//
this.ServerText.Location = new System.Drawing.Point(6, 160);
this.ServerText.MaxLength = 50;
this.ServerText.Name = "ServerText";
this.ServerText.Size = new System.Drawing.Size(188, 23);
this.ServerText.TabIndex = 1;
this.ServerText.TextChanged += new System.EventHandler(this.textBox1_TextChanged);
//
// DatabaseText
//
this.DatabaseText.Location = new System.Drawing.Point(6, 213);
this.DatabaseText.MaxLength = 50;
this.DatabaseText.Name = "DatabaseText";
this.DatabaseText.Size = new System.Drawing.Size(188, 23);
this.DatabaseText.TabIndex = 2;
//
// label4
//
this.label4.AutoSize = true;
this.label4.Location = new System.Drawing.Point(6, 195);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(55, 15);
this.label4.TabIndex = 4;
this.label4.Text = "Database";
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(0, 18);
this.textBox3.Name = "textBox3";
this.textBox3.Size = new System.Drawing.Size(188, 23);
this.textBox3.TabIndex = 7;
//
// label5
//
this.label5.AutoSize = true;
this.label5.Location = new System.Drawing.Point(0, 0);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(39, 15);
this.label5.TabIndex = 6;
this.label5.Text = "Server";
//
// UserIdText
//
this.UserIdText.Location = new System.Drawing.Point(6, 266);
this.UserIdText.MaxLength = 30;
this.UserIdText.Name = "UserIdText";
this.UserIdText.Size = new System.Drawing.Size(188, 23);
this.UserIdText.TabIndex = 3;
//
// label6
//
this.label6.AutoSize = true;
this.label6.Location = new System.Drawing.Point(6, 248);
this.label6.Name = "label6";
this.label6.Size = new System.Drawing.Size(44, 15);
this.label6.TabIndex = 8;
this.label6.Text = "User ID";
//
// PasswordText
//
this.PasswordText.Location = new System.Drawing.Point(6, 316);
this.PasswordText.MaxLength = 30;
this.PasswordText.Name = "PasswordText";
this.PasswordText.Size = new System.Drawing.Size(188, 23);
this.PasswordText.TabIndex = 4;
this.PasswordText.TextChanged += new System.EventHandler(this.textBox5_TextChanged);
//
// label7
//
this.label7.AutoSize = true;
this.label7.Location = new System.Drawing.Point(6, 298);
this.label7.Name = "label7";
this.label7.Size = new System.Drawing.Size(57, 15);
this.label7.TabIndex = 10;
this.label7.Text = "Password";
//
// ISCb
//
this.ISCb.AutoSize = true;
this.ISCb.Location = new System.Drawing.Point(6, 355);
this.ISCb.Name = "ISCb";
this.ISCb.Size = new System.Drawing.Size(125, 19);
this.ISCb.TabIndex = 5;
this.ISCb.Text = "Integrated Security";
this.ISCb.UseVisualStyleBackColor = true;
this.ISCb.CheckedChanged += new System.EventHandler(this.ISCb_CheckedChanged);
//
// SaveBtn
//
this.SaveBtn.FlatAppearance.BorderSize = 2;
this.SaveBtn.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.SaveBtn.Location = new System.Drawing.Point(9, 380);
this.SaveBtn.Name = "SaveBtn";
this.SaveBtn.Size = new System.Drawing.Size(179, 37);
this.SaveBtn.TabIndex = 6;
this.SaveBtn.Text = "SAVE";
this.SaveBtn.UseVisualStyleBackColor = true;
this.SaveBtn.Click += new System.EventHandler(this.SaveBtn_Click);
//
// Setting
//
this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(761, 518);
this.Name = "Setting";
this.Text = "Setting";
this.leftPanel.ResumeLayout(false);
this.leftPanel.PerformLayout();
this.panel1.ResumeLayout(false);
this.RightPanel.ResumeLayout(false);
this.panel2.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TextBox ServerText;
private System.Windows.Forms.TextBox PasswordText;
private System.Windows.Forms.Label label7;
private System.Windows.Forms.TextBox UserIdText;
private System.Windows.Forms.Label label6;
private System.Windows.Forms.TextBox textBox3;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.TextBox DatabaseText;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.CheckBox ISCb;
private System.Windows.Forms.Button SaveBtn;
}
}
登录代码
namespace IMS
{
public partial class Login : Sample
{
public Login()
{
InitializeComponent();
}
private void loginbtn_Click(object sender, EventArgs e)
{
HomeScreen obj = new HomeScreen();
MainClass.ShowWindow(obj, this, MDI.ActiveForm);
}
}
}
login.designer.cs
namespace IMS
{
partial class Login
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (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.label3 = new System.Windows.Forms.Label();
this.UsernameText = new System.Windows.Forms.TextBox();
this.PasswordText = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.loginbtn = new System.Windows.Forms.Button();
this.RightPanel.SuspendLayout();
this.panel2.SuspendLayout();
this.panel1.SuspendLayout();
this.leftPanel.SuspendLayout();
this.SuspendLayout();
//
// leftPanel
//
this.leftPanel.Controls.Add(this.loginbtn);
this.leftPanel.Controls.Add(this.PasswordText);
this.leftPanel.Controls.Add(this.label4);
this.leftPanel.Controls.Add(this.UsernameText);
this.leftPanel.Controls.Add(this.label3);
this.leftPanel.Controls.SetChildIndex(this.panel1, 0);
this.leftPanel.Controls.SetChildIndex(this.label3, 0);
this.leftPanel.Controls.SetChildIndex(this.UsernameText, 0);
this.leftPanel.Controls.SetChildIndex(this.label4, 0);
this.leftPanel.Controls.SetChildIndex(this.PasswordText, 0);
this.leftPanel.Controls.SetChildIndex(this.loginbtn, 0);
//
// label3
//
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(14, 171);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(60, 15);
this.label3.TabIndex = 1;
this.label3.Text = "Username";
//
// UsernameText
//
this.UsernameText.Location = new System.Drawing.Point(12, 189);
this.UsernameText.MaxLength = 30;
this.UsernameText.Name = "UsernameText";
this.UsernameText.Size = new System.Drawing.Size(170, 23);
this.UsernameText.TabIndex = 2;
//
// PasswordText
//
this.PasswordText.Location = new System.Drawing.Point(12, 233);
this.PasswordText.MaxLength = 30;
this.PasswordText.Name = "PasswordText";
this.PasswordText.Size = new System.Drawing.Size(170, 23);
this.PasswordText.TabIndex = 4;
this.PasswordText.UseSystemPasswordChar = true;
//
// label4
//
this.label4.AutoSize = true;
this.label4.Location = new System.Drawing.Point(12, 215);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(57, 15);
this.label4.TabIndex = 3;
this.label4.Text = "Password";
//
// loginbtn
//
this.loginbtn.FlatAppearance.BorderSize = 2;
this.loginbtn.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.loginbtn.Location = new System.Drawing.Point(13, 274);
this.loginbtn.Name = "loginbtn";
this.loginbtn.Size = new System.Drawing.Size(169, 35);
this.loginbtn.TabIndex = 5;
this.loginbtn.Text = "Login";
this.loginbtn.UseVisualStyleBackColor = true;
this.loginbtn.Click += new System.EventHandler(this.loginbtn_Click);
//
// Login
//
this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(761, 496);
this.Name = "Login";
this.Text = "Login";
this.RightPanel.ResumeLayout(false);
this.panel2.ResumeLayout(false);
this.panel1.ResumeLayout(false);
this.leftPanel.ResumeLayout(false);
this.leftPanel.PerformLayout();
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.Button loginbtn;
private System.Windows.Forms.TextBox PasswordText;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.TextBox UsernameText;
private System.Windows.Forms.Label label3;
}
}
MainClass代码
namespace IMS
{
class MainClass
{
public static string path = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
public static string s = File.ReadAllText(path + "\\connection");
public static SqlConnection con = new SqlConnection(s);
public static DialogResult ShowMsg(string msg, string heading, string type)
{
if(type == "success")
{
return MessageBox.Show(msg, heading, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
return MessageBox.Show(msg, heading, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
public static void ShowWindow(Form openwin, Form clswin, Form MDIwin)
{
clswin.Close();
openwin.MdiParent = MDIwin;
openwin.WindowState = FormWindowState.Maximized;
openwin.Show();
}
public static void ShowWindow(Form openwin, Form MDIwin)
{
openwin.MdiParent = MDIwin;
openwin.WindowState = FormWindowState.Maximized;
openwin.Show();
}
}
}