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Csharp/C Sharp/GUI Windows Form/Data Validation - История изменений
2026-04-29T15:17:08Z
История изменений этой страницы в вики
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http://nfex.ru/index.php?title=Csharp/C_Sharp/GUI_Windows_Form/Data_Validation&diff=94&oldid=prev
в 15:31, 26 мая 2010
2010-05-26T15:31:18Z
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Admin: 1 версия
2010-05-26T11:33:05Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==Error Provider Validation==<br />
<br />
<br />
<br />
<br />
<source lang="csharp"><br />
/*<br />
User Interfaces in C#: Windows Forms and Custom Controls<br />
by Matthew MacDonald<br />
Publisher: Apress<br />
ISBN: 1590590457<br />
*/<br />
using System;<br />
using System.Drawing;<br />
using System.Collections;<br />
using System.ruponentModel;<br />
using System.Windows.Forms;<br />
namespace Validation<br />
{<br />
/// <summary><br />
/// Summary description for ErrorProviderValidation.<br />
/// </summary><br />
public class ErrorProviderValidation : System.Windows.Forms.Form<br />
{<br />
internal System.Windows.Forms.Label Label3;<br />
internal System.Windows.Forms.TextBox txtEmail;<br />
internal System.Windows.Forms.Label Label2;<br />
internal System.Windows.Forms.Label Label1;<br />
internal System.Windows.Forms.TextBox txtFirstName;<br />
internal System.Windows.Forms.TextBox txtLastName;<br />
internal System.Windows.Forms.Button Button1;<br />
internal System.Windows.Forms.ErrorProvider errProvider;<br />
internal System.Windows.Forms.GroupBox grpValidation;<br />
/// <summary><br />
/// Required designer variable.<br />
/// </summary><br />
private System.ruponentModel.Container components = null;<br />
public ErrorProviderValidation()<br />
{<br />
//<br />
// Required for Windows Form Designer support<br />
//<br />
InitializeComponent();<br />
//<br />
// TODO: Add any constructor code after InitializeComponent call<br />
//<br />
}<br />
/// <summary><br />
/// Clean up any resources being used.<br />
/// </summary><br />
protected override void Dispose( bool disposing )<br />
{<br />
if( disposing )<br />
{<br />
if(components != null)<br />
{<br />
components.Dispose();<br />
}<br />
}<br />
base.Dispose( disposing );<br />
}<br />
#region Windows Form Designer generated code<br />
/// <summary><br />
/// Required method for Designer support - do not modify<br />
/// the contents of this method with the code editor.<br />
/// </summary><br />
private void InitializeComponent()<br />
{<br />
this.grpValidation = new System.Windows.Forms.GroupBox();<br />
this.Label3 = new System.Windows.Forms.Label();<br />
this.txtEmail = new System.Windows.Forms.TextBox();<br />
this.Label2 = new System.Windows.Forms.Label();<br />
this.Label1 = new System.Windows.Forms.Label();<br />
this.txtFirstName = new System.Windows.Forms.TextBox();<br />
this.txtLastName = new System.Windows.Forms.TextBox();<br />
this.Button1 = new System.Windows.Forms.Button();<br />
this.errProvider = new System.Windows.Forms.ErrorProvider();<br />
this.grpValidation.SuspendLayout();<br />
this.SuspendLayout();<br />
// <br />
// grpValidation<br />
// <br />
this.grpValidation.Controls.AddRange(new System.Windows.Forms.Control[] {<br />
this.Label3,<br />
this.txtEmail,<br />
this.Label2,<br />
this.Label1,<br />
this.txtFirstName,<br />
this.txtLastName});<br />
this.grpValidation.Location = new System.Drawing.Point(8, 8);<br />
this.grpValidation.Name = "grpValidation";<br />
this.grpValidation.Size = new System.Drawing.Size(368, 124);<br />
this.grpValidation.TabIndex = 13;<br />
this.grpValidation.TabStop = false;<br />
// <br />
// Label3<br />
// <br />
this.Label3.Location = new System.Drawing.Point(16, 88);<br />
this.Label3.Name = "Label3";<br />
this.Label3.Size = new System.Drawing.Size(64, 16);<br />
this.Label3.TabIndex = 10;<br />
this.Label3.Text = "Email:";<br />
// <br />
// txtEmail<br />
// <br />
this.txtEmail.Location = new System.Drawing.Point(84, 84);<br />
this.txtEmail.Name = "txtEmail";<br />
this.txtEmail.Size = new System.Drawing.Size(152, 21);<br />
this.txtEmail.TabIndex = 9;<br />
this.txtEmail.Text = "";<br />
this.txtEmail.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txtEmail_KeyPress);<br />
// <br />
// Label2<br />
// <br />
this.Label2.Location = new System.Drawing.Point(16, 52);<br />
this.Label2.Name = "Label2";<br />
this.Label2.Size = new System.Drawing.Size(64, 16);<br />
this.Label2.TabIndex = 8;<br />
this.Label2.Text = "Last Name:";<br />
// <br />
// Label1<br />
// <br />
this.Label1.Location = new System.Drawing.Point(16, 28);<br />
this.Label1.Name = "Label1";<br />
this.Label1.Size = new System.Drawing.Size(64, 16);<br />
this.Label1.TabIndex = 7;<br />
this.Label1.Text = "First Name:";<br />
// <br />
// txtFirstName<br />
// <br />
this.txtFirstName.Location = new System.Drawing.Point(84, 24);<br />
this.txtFirstName.Name = "txtFirstName";<br />
this.txtFirstName.Size = new System.Drawing.Size(152, 21);<br />
this.txtFirstName.TabIndex = 4;<br />
this.txtFirstName.Text = "";<br />
this.txtFirstName.Validating += new System.ruponentModel.CancelEventHandler(this.txtName_Validating);<br />
// <br />
// txtLastName<br />
// <br />
this.txtLastName.Location = new System.Drawing.Point(84, 48);<br />
this.txtLastName.Name = "txtLastName";<br />
this.txtLastName.Size = new System.Drawing.Size(152, 21);<br />
this.txtLastName.TabIndex = 5;<br />
this.txtLastName.Text = "";<br />
this.txtLastName.Validating += new System.ruponentModel.CancelEventHandler(this.txtName_Validating);<br />
// <br />
// Button1<br />
// <br />
this.Button1.Location = new System.Drawing.Point(152, 204);<br />
this.Button1.Name = "Button1";<br />
this.Button1.Size = new System.Drawing.Size(76, 24);<br />
this.Button1.TabIndex = 12;<br />
this.Button1.Text = "OK";<br />
this.Button1.Click += new System.EventHandler(this.Button1_Click);<br />
// <br />
// errProvider<br />
// <br />
this.errProvider.DataMember = null;<br />
// <br />
// ErrorProviderValidation<br />
// <br />
this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);<br />
this.ClientSize = new System.Drawing.Size(388, 242);<br />
this.Controls.AddRange(new System.Windows.Forms.Control[] {<br />
this.grpValidation,<br />
this.Button1});<br />
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));<br />
this.Name = "ErrorProviderValidation";<br />
this.Text = "ErrorProviderValidation";<br />
this.grpValidation.ResumeLayout(false);<br />
this.ResumeLayout(false);<br />
}<br />
#endregion<br />
[STAThread]<br />
static void Main() <br />
{<br />
Application.Run(new ErrorProviderValidation());<br />
}<br />
private void Button1_Click(object sender, System.EventArgs e)<br />
{<br />
bool invalidInput = false;<br />
<br />
foreach (Control ctrl in this.grpValidation.Controls)<br />
{<br />
if (errProvider.GetError(ctrl) != "")<br />
{<br />
invalidInput = true;<br />
break;<br />
}<br />
}<br />
<br />
if (invalidInput)<br />
{<br />
MessageBox.Show("You still have invalid input.", "Invalid Input", MessageBoxButtons.OK, MessageBoxIcon.Warning);<br />
}<br />
else<br />
{<br />
this.Close();<br />
}<br />
<br />
}<br />
private void txtName_Validating(object sender, System.ruponentModel.CancelEventArgs e)<br />
{<br />
Control ctrl = (Control)sender;<br />
if (ctrl.Text == "")<br />
{<br />
errProvider.SetError(ctrl, "You must enter a first and last name.");<br />
}<br />
else<br />
{<br />
errProvider.SetError(ctrl, "");<br />
}<br />
}<br />
private void txtEmail_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)<br />
{<br />
System.Text.RegularExpressions.Regex regex;<br />
regex = new System.Text.RegularExpressions.Regex(@"\S+@\S+\.\S+");<br />
Control ctrl = (Control)sender;<br />
if (regex.IsMatch(ctrl.Text))<br />
{<br />
errProvider.SetError(ctrl, "");<br />
}<br />
else<br />
{<br />
errProvider.SetError(ctrl, "Not a valid email.");<br />
}<br />
}<br />
<br />
}<br />
}<br />
<br />
<br />
</source><br />
<br />
<br />
==Simple Form Validation==<br />
<br />
<br />
<br />
<br />
<source lang="csharp"><br />
/*<br />
User Interfaces in C#: Windows Forms and Custom Controls<br />
by Matthew MacDonald<br />
Publisher: Apress<br />
ISBN: 1590590457<br />
*/<br />
using System;<br />
using System.Drawing;<br />
using System.Collections;<br />
using System.ruponentModel;<br />
using System.Windows.Forms;<br />
namespace Validation<br />
{<br />
/// <summary><br />
/// Summary description for SimpleValidation.<br />
/// </summary><br />
public class SimpleValidation : System.Windows.Forms.Form<br />
{<br />
internal System.Windows.Forms.GroupBox GroupBox1;<br />
internal System.Windows.Forms.Label Label2;<br />
internal System.Windows.Forms.Label Label1;<br />
internal System.Windows.Forms.TextBox txtFirstName;<br />
internal System.Windows.Forms.TextBox txtLastName;<br />
internal System.Windows.Forms.Button Button1;<br />
/// <summary><br />
/// Required designer variable.<br />
/// </summary><br />
private System.ruponentModel.Container components = null;<br />
public SimpleValidation()<br />
{<br />
//<br />
// Required for Windows Form Designer support<br />
//<br />
InitializeComponent();<br />
//<br />
// TODO: Add any constructor code after InitializeComponent call<br />
//<br />
}<br />
/// <summary><br />
/// Clean up any resources being used.<br />
/// </summary><br />
protected override void Dispose( bool disposing )<br />
{<br />
if( disposing )<br />
{<br />
if(components != null)<br />
{<br />
components.Dispose();<br />
}<br />
}<br />
base.Dispose( disposing );<br />
}<br />
#region Windows Form Designer generated code<br />
/// <summary><br />
/// Required method for Designer support - do not modify<br />
/// the contents of this method with the code editor.<br />
/// </summary><br />
private void InitializeComponent()<br />
{<br />
this.GroupBox1 = new System.Windows.Forms.GroupBox();<br />
this.Label2 = new System.Windows.Forms.Label();<br />
this.Label1 = new System.Windows.Forms.Label();<br />
this.txtFirstName = new System.Windows.Forms.TextBox();<br />
this.txtLastName = new System.Windows.Forms.TextBox();<br />
this.Button1 = new System.Windows.Forms.Button();<br />
this.GroupBox1.SuspendLayout();<br />
this.SuspendLayout();<br />
// <br />
// GroupBox1<br />
// <br />
this.GroupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {<br />
this.Label2,<br />
this.Label1,<br />
this.txtFirstName,<br />
this.txtLastName});<br />
this.GroupBox1.Location = new System.Drawing.Point(8, 12);<br />
this.GroupBox1.Name = "GroupBox1";<br />
this.GroupBox1.Size = new System.Drawing.Size(368, 88);<br />
this.GroupBox1.TabIndex = 11;<br />
this.GroupBox1.TabStop = false;<br />
// <br />
// Label2<br />
// <br />
this.Label2.Location = new System.Drawing.Point(16, 52);<br />
this.Label2.Name = "Label2";<br />
this.Label2.Size = new System.Drawing.Size(64, 16);<br />
this.Label2.TabIndex = 8;<br />
this.Label2.Text = "Last Name:";<br />
// <br />
// Label1<br />
// <br />
this.Label1.Location = new System.Drawing.Point(16, 28);<br />
this.Label1.Name = "Label1";<br />
this.Label1.Size = new System.Drawing.Size(64, 16);<br />
this.Label1.TabIndex = 7;<br />
this.Label1.Text = "First Name:";<br />
// <br />
// txtFirstName<br />
// <br />
this.txtFirstName.Location = new System.Drawing.Point(84, 24);<br />
this.txtFirstName.Name = "txtFirstName";<br />
this.txtFirstName.Size = new System.Drawing.Size(152, 21);<br />
this.txtFirstName.TabIndex = 4;<br />
this.txtFirstName.Text = "";<br />
this.txtFirstName.Validating += new System.ruponentModel.CancelEventHandler(this.txtName_Validating);<br />
// <br />
// txtLastName<br />
// <br />
this.txtLastName.Location = new System.Drawing.Point(84, 48);<br />
this.txtLastName.Name = "txtLastName";<br />
this.txtLastName.Size = new System.Drawing.Size(152, 21);<br />
this.txtLastName.TabIndex = 5;<br />
this.txtLastName.Text = "";<br />
this.txtLastName.Validating += new System.ruponentModel.CancelEventHandler(this.txtName_Validating);<br />
// <br />
// Button1<br />
// <br />
this.Button1.Location = new System.Drawing.Point(152, 208);<br />
this.Button1.Name = "Button1";<br />
this.Button1.Size = new System.Drawing.Size(76, 24);<br />
this.Button1.TabIndex = 10;<br />
this.Button1.Text = "OK";<br />
this.Button1.Click += new System.EventHandler(this.Button1_Click);<br />
// <br />
// SimpleValidation<br />
// <br />
this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);<br />
this.ClientSize = new System.Drawing.Size(384, 242);<br />
this.Controls.AddRange(new System.Windows.Forms.Control[] {<br />
this.GroupBox1,<br />
this.Button1});<br />
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));<br />
this.Name = "SimpleValidation";<br />
this.Text = "SimpleValidation";<br />
this.GroupBox1.ResumeLayout(false);<br />
this.ResumeLayout(false);<br />
}<br />
#endregion<br />
private void Button1_Click(object sender, System.EventArgs e)<br />
{<br />
this.Close();<br />
}<br />
[STAThread]<br />
static void Main() <br />
{<br />
Application.Run(new SimpleValidation());<br />
}<br />
private void txtName_Validating(object sender, System.ruponentModel.CancelEventArgs e)<br />
{<br />
if (((TextBox)sender).Text == "")<br />
{<br />
MessageBox.Show("You must enter a first and last name.", "Invalid Input", MessageBoxButtons.OK, MessageBoxIcon.Warning);<br />
e.Cancel = true;<br />
}<br />
}<br />
}<br />
}<br />
<br />
<br />
</source></div>
Admin