先说服务端：界面：如图：
界面设计源码
namespace SocketJPGToTxt { partial class Form1 { /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// 清理所有正在使用的资源。 /// </summary> /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows 窗体设计器生成的代码 /// <summary> /// 设计器支持所需的方法 - 不要修改 /// 使用代码编辑器修改此方法的内容。 /// </summary> private void InitializeComponent() { this.txtMsg = new System.Windows.Forms.TextBox(); this.txtPort = new System.Windows.Forms.TextBox(); this.btnStart = new System.Windows.Forms.Button(); this.cboUsers = new System.Windows.Forms.ComboBox(); this.listBox2 = new System.Windows.Forms.ListBox(); this.txtPath = new System.Windows.Forms.TextBox(); this.btnSelect = new System.Windows.Forms.Button(); this.button3 = new System.Windows.Forms.Button(); this.btnSend = new System.Windows.Forms.Button(); this.btnZD = new System.Windows.Forms.Button(); this.txtLog = new System.Windows.Forms.TextBox(); this.SuspendLayout(); // // txtMsg // this.txtMsg.Location = new System.Drawing.Point(22, 28); this.txtMsg.Name = "txtMsg"; this.txtMsg.Size = new System.Drawing.Size(166, 21); this.txtMsg.TabIndex = 0; this.txtMsg.Text = "127.0.0.1"; // // txtPort // this.txtPort.Location = new System.Drawing.Point(194, 28); this.txtPort.Name = "txtPort"; this.txtPort.Size = new System.Drawing.Size(100, 21); this.txtPort.TabIndex = 1; this.txtPort.Text = "8081"; // // btnStart // this.btnStart.Location = new System.Drawing.Point(351, 25); this.btnStart.Name = "btnStart"; this.btnStart.Size = new System.Drawing.Size(75, 23); this.btnStart.TabIndex = 2; this.btnStart.Text = "开启监听"; this.btnStart.UseVisualStyleBackColor = true; this.btnStart.Click += new System.EventHandler(this.btnStart_Click); // // cboUsers // this.cboUsers.FormattingEnabled = true; this.cboUsers.Location = new System.Drawing.Point(491, 25); this.cboUsers.Name = "cboUsers"; this.cboUsers.Size = new System.Drawing.Size(121, 20); this.cboUsers.TabIndex = 3; // // listBox2 // this.listBox2.FormattingEnabled = true; this.listBox2.ItemHeight = 12; this.listBox2.Location = new System.Drawing.Point(13, 193); this.listBox2.Name = "listBox2"; this.listBox2.Size = new System.Drawing.Size(668, 124); this.listBox2.TabIndex = 5; // // txtPath // this.txtPath.Location = new System.Drawing.Point(33, 338); this.txtPath.Name = "txtPath"; this.txtPath.Size = new System.Drawing.Size(298, 21); this.txtPath.TabIndex = 6; // // btnSelect // this.btnSelect.Location = new System.Drawing.Point(351, 336); this.btnSelect.Name = "btnSelect"; this.btnSelect.Size = new System.Drawing.Size(75, 23); this.btnSelect.TabIndex = 7; this.btnSelect.Text = "浏览"; this.btnSelect.UseVisualStyleBackColor = true; this.btnSelect.Click += new System.EventHandler(this.btnSelect_Click); // // button3 // this.button3.Location = new System.Drawing.Point(467, 335); this.button3.Name = "button3"; this.button3.Size = new System.Drawing.Size(75, 23); this.button3.TabIndex = 8; this.button3.Text = "发送文件"; this.button3.UseVisualStyleBackColor = true; this.button3.Click += new System.EventHandler(this.btnSendFile_Click); // // btnSend // this.btnSend.Location = new System.Drawing.Point(158, 387); this.btnSend.Name = "btnSend"; this.btnSend.Size = new System.Drawing.Size(75, 23); this.btnSend.TabIndex = 9; this.btnSend.Text = "发送消息"; this.btnSend.UseVisualStyleBackColor = true; this.btnSend.Click += new System.EventHandler(this.btnSend_Click); // // btnZD // this.btnZD.Location = new System.Drawing.Point(363, 386); this.btnZD.Name = "btnZD"; this.btnZD.Size = new System.Drawing.Size(75, 23); this.btnZD.TabIndex = 10; this.btnZD.Text = "震动"; this.btnZD.UseVisualStyleBackColor = true; this.btnZD.Click += new System.EventHandler(this.btnZD_Click); // // txtLog // this.txtLog.Location = new System.Drawing.Point(22, 65); this.txtLog.Multiline = true; this.txtLog.Name = "txtLog"; this.txtLog.Size = new System.Drawing.Size(659, 96); this.txtLog.TabIndex = 11; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(800, 450); this.Controls.Add(this.txtLog); this.Controls.Add(this.btnZD); this.Controls.Add(this.btnSend); this.Controls.Add(this.button3); this.Controls.Add(this.btnSelect); this.Controls.Add(this.txtPath); this.Controls.Add(this.listBox2); this.Controls.Add(this.cboUsers); this.Controls.Add(this.btnStart); this.Controls.Add(this.txtPort); this.Controls.Add(this.txtMsg); this.Name = "Form1"; this.Text = "Socket服务端"; this.Load += new System.EventHandler(this.Form1_Load); this.ResumeLayout(false); this.PerformLayout(); } #endregion private System.Windows.Forms.TextBox txtMsg; private System.Windows.Forms.TextBox txtPort; private System.Windows.Forms.Button btnStart; private System.Windows.Forms.ComboBox cboUsers; private System.Windows.Forms.ListBox listBox2; private System.Windows.Forms.TextBox txtPath; private System.Windows.Forms.Button btnSelect; private System.Windows.Forms.Button button3; private System.Windows.Forms.Button btnSend; private System.Windows.Forms.Button btnZD; private System.Windows.Forms.TextBox txtLog; } }