using System;using System.Collections;using System.ComponentModel;using System.Drawing;using System.Data;using System.Windows.Forms;using System.Text.RegularExpressions;namespace IpAdd.Controls...{public class IpBox : System.Windows.Forms.UserControl...{ private System.Windows.Forms.Panel panel1; private System.Windows.Forms.TextBox textBox4; private System.Windows.Forms.Label label3; private System.Windows.Forms.TextBox textBox3; private System.Windows.Forms.Label label2; private System.Windows.Forms.TextBox textBox2; private System.Windows.Forms.Label label1; private System.Windows.Forms.TextBox textBox1; private string _text = ""; /**//// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.Container components = null; public IpBox() ...{ // 该调用是 Windows.Forms 窗体设计器所必需的。 InitializeComponent(); // TODO: 在 InitializeComponent 调用后添加任何初始化 } /**//// <summary> /// 清理所有正在使用的资源。 /// </summary> protected override void Dispose( bool disposing ) ...{ if( disposing ) ...{ if(components != null) ...{ components.Dispose(); } } base.Dispose( disposing ); } 组件设计器生成的代码#region 组件设计器生成的代码 /**//// <summary> /// 设计器支持所需的方法 - 不要使用代码编辑器 /// 修改此方法的内容。 /// </summary> private void InitializeComponent() ...{ this.panel1 = new System.Windows.Forms.Panel(); this.textBox4 = new System.Windows.Forms.TextBox(); this.label3 = new System.Windows.Forms.Label(); this.textBox3 = new System.Windows.Forms.TextBox(); this.label2 = new System.Windows.Forms.Label(); this.textBox2 = new System.Windows.Forms.TextBox(); this.label1 = new System.Windows.Forms.Label(); this.textBox1 = new System.Windows.Forms.TextBox(); this.panel1.SuspendLayout(); this.SuspendLayout(); // // panel1 // this.panel1.BackColor = System.Drawing.Color.White; this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.panel1.Controls.Add(this.textBox4); this.panel1.Controls.Add(this.label3); this.panel1.Controls.Add(this.textBox3); this.panel1.Controls.Add(this.label2); this.panel1.Controls.Add(this.textBox2); this.panel1.Controls.Add(this.label1); this.panel1.Controls.Add(this.textBox1); this.panel1.Location = new System.Drawing.Point(0, 0); this.panel1.Name = "panel1"; this.panel1.Size = new System.Drawing.Size(136, 20); this.panel1.TabIndex = 1; // // textBox4 // this.textBox4.BorderStyle = System.Windows.Forms.BorderStyle.None; this.textBox4.Location = new System.Drawing.Point(104, 0); this.textBox4.MaxLength = 3; this.textBox4.Name = "textBox4"; this.textBox4.Size = new System.Drawing.Size(20, 14); this.textBox4.TabIndex = 6; this.textBox4.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; this.textBox4.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox4_KeyPress); // // label3 // this.label3.Location = new System.Drawing.Point(96, 0); this.label3.Name = "label3"; this.label3.Size = new System.Drawing.Size(8, 14); this.label3.TabIndex = 5; this.label3.Text = "."; this.label3.TextAlign = System.Drawing.ContentAlignment.TopCenter; // // textBox3 // this.textBox3.BorderStyle = System.Windows.Forms.BorderStyle.None; this.textBox3.Location = new System.Drawing.Point(72, 0); this.textBox3.MaxLength = 3; this.textBox3.Name = "textBox3"; this.textBox3.Size = new System.Drawing.Size(20, 14); this.textBox3.TabIndex = 4; this.textBox3.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; this.textBox3.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox3_KeyPress); // // label2 // this.label2.Location = new System.Drawing.Point(64, 0); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(8, 14); this.label2.TabIndex = 3; this.label2.Text = "."; this.label2.TextAlign = System.Drawing.ContentAlignment.TopCenter; // // textBox2 // this.textBox2.BorderStyle = System.Windows.Forms.BorderStyle.None; this.textBox2.Location = new System.Drawing.Point(40, 0); this.textBox2.MaxLength = 3; this.textBox2.Name = "textBox2"; this.textBox2.Size = new System.Drawing.Size(20, 14); this.textBox2.TabIndex = 2; this.textBox2.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; this.textBox2.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox2_KeyPress); // // label1 // this.label1.Location = new System.Drawing.Point(32, 0); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(8, 14); this.label1.TabIndex = 1; this.label1.Text = "."; this.label1.TextAlign = System.Drawing.ContentAlignment.TopCenter; // // textBox1 // this.textBox1.BorderStyle = System.Windows.Forms.BorderStyle.None; this.textBox1.Location = new System.Drawing.Point(8, 0); this.textBox1.MaxLength = 3; this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(20, 14); this.textBox1.TabIndex = 0; this.textBox1.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; this.textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox1_KeyPress); // // IpBox // this.Controls.Add(this.panel1); this.Name = "IpBox"; this.Size = new System.Drawing.Size(136, 20); this.panel1.ResumeLayout(false); this.ResumeLayout(false); } #endregion private void textBox1_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e) ...{ //System.Text.Encoding.GetEncoding(0).GetString(); } private void textBox1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e) ...{ MaskIpAddr( textBox1, e ); } private void textBox2_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e) ...{ MaskIpAddr( textBox2, e ); } private void textBox3_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e) ...{ MaskIpAddr( textBox3, e ); } private void textBox4_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e) ...{ MaskIpAddr( textBox4, e ); } private void MaskIpAddr( System.Windows.Forms.TextBox textBox, KeyPressEventArgs e) ...{ int len = textBox.Text.Length; if(Char.IsDigit(e.KeyChar) || e.KeyChar == '.' || e.KeyChar == 8) ...{ if (e.KeyChar != 8) ...{ if(len == 2 && e.KeyChar != '.') ...{ string tmp = textBox.Text + e.KeyChar; if( textBox.Name == "textBox1" ) ...{ if(Int32.Parse(tmp)> 223) // 进行验证 ...{ MessageBox.Show( tmp + " 不是一个有效项目。请指定一个介于 1 和 223 之间的数值。"); textBox.Text = "223"; textBox.Focus(); return; } textBox2.Focus(); textBox2.SelectAll(); } else if( textBox.Name == "textBox2" ) ...{ if(Int32.Parse(tmp)> 255) ...{ MessageBox.Show( tmp + " 不是一个有效项目。请指定一个介于 1 和 255 之间的数值。"); textBox.Text = "255"; textBox.Focus(); return; } textBox3.Focus(); textBox3.SelectAll(); } else if( textBox.Name == "textBox3" ) ...{ if(Int32.Parse(tmp)> 255) ...{ MessageBox.Show( tmp + " 不是一个有效项目。请指定一个介于 1 和 255 之间的数值。"); textBox.Text = "255"; textBox.Focus(); return; } textBox4.Focus(); textBox4.SelectAll(); } else if( textBox.Name == "textBox4" ) ...{ if(Int32.Parse(tmp)> 255) ...{ MessageBox.Show( tmp + " 不是一个有效项目。请指定一个介于 1 和 255 之间的数值。"); textBox.Text = "255"; textBox.Focus(); return; } } } if(e.KeyChar == '.') ...{ if( textBox.Name == "textBox1" && textBox.Text != "" ) ...{ textBox2.Focus(); textBox2.SelectAll(); } if( textBox.Name == "textBox2" && textBox.Text != "" ) ...{ textBox3.Focus(); textBox3.SelectAll(); } if( textBox.Name == "textBox3" && textBox.Text != "" ) ...{ textBox4.Focus(); textBox4.SelectAll(); } if( textBox.Name == "textBox4" && textBox.Text != "" ) ...{ } e.Handled = true; } } else ...{ if( textBox.Name == "textBox1" && textBox.Text == "") ...{ } if( textBox.Name == "textBox2" && textBox.Text == "") ...{ textBox1.Focus(); textBox1.SelectionStart = textBox1.Text.Length; } if( textBox.Name == "textBox3" && textBox.Text == "") ...{ textBox2.Focus(); textBox2.SelectionStart = textBox2.Text.Length; } if( textBox.Name == "textBox4" && textBox.Text == "") ...{ textBox3.Focus(); textBox3.SelectionStart = textBox3.Text.Length; } e.Handled = false; } } else e.Handled = true; } [Browsable(true)] /**//// <summary> /// 获取 IpBox 的文本。 /// </summary> public new string Text ...{ get ...{ if( textBox1.Text == "" || textBox2.Text == "" || textBox3.Text == "" || textBox4.Text == "") ...{ _text = ""; return _text; } else ...{ _text = Convert.ToInt32(textBox1.Text).ToString() + "." + Convert.ToInt32(textBox2.Text).ToString() + "." + Convert.ToInt32(textBox3.Text).ToString() + "." + Convert.ToInt32(textBox4.Text).ToString(); return _text; } } /**//* set // { if(value != null) { // 255-255-255-255 //string pattern = @"^([1-9]|d{2}|1[0-9]{1,2}|2[0-5]{2}).(d{1,2}|1[0-9]{1,2}|[1-2][0-5]{2}).(d{1,2}|1[0-9]{1,2}|[1-2][0-5]{2}).(d{1,2}|1[0-9]{1,2}|[1-2][0-5]{2})$"; // 223-255-255-255 string pattern = @"^([1-9]|d{2}|1[0-9]{1,2}|2[1-2][1-3]).(d{1,2}|1[0-9]{1,2}|[1-2][0-5]{2}).(d{1,2}|1[0-9]{1,2}|[1-2][0-5]{2}).(d{1,2}|1[0-9]{1,2}|[1-2][0-5]{2})$"; if( !Regex.IsMatch(value , pattern) ) { _text = ""; throw new Exception("IP 地址格式错误!"); } else { string[] ipnum = value.Split('.'); textBox1.Text = ipnum[0]; textBox2.Text = ipnum[1]; textBox3.Text = ipnum[2]; textBox4.Text = ipnum[3]; } } _text = value; } */ }}}