C#實(shí)現(xiàn)SMTP服務(wù)發(fā)送郵件的示例代碼
實(shí)踐過(guò)程
效果
代碼
public partial class frmSend : Form { public frmSend() { InitializeComponent(); } //對(duì)郵件內(nèi)容進(jìn)行編碼 private static string Base64Encode(string str) { return Convert.ToBase64String(Encoding.UTF8.GetBytes(str)); } private void SendEmail(MailMessage message) { message.Subject = Base64Encode(txtSubject.Text); //設(shè)置發(fā)送郵件的主題 message.Body = Base64Encode(txtContent.Text); //設(shè)置發(fā)送郵件的內(nèi)容 //實(shí)例化SmtpClient郵件發(fā)送類對(duì)象 SmtpClient client = new SmtpClient(txtServer.Text, Convert.ToInt32(txtPort.Text)); //設(shè)置用于驗(yàn)證發(fā)件人身份的憑據(jù) client.Credentials = new System.Net.NetworkCredential(txtName.Text, txtPwd.Text); //發(fā)送郵件 client.Send(message); } private void frmSend_Load(object sender, EventArgs e) { txtServer.Text = Dns.GetHostName(); } private void btnSend_Click(object sender, EventArgs e) { try { if (validateEmail(txtSend.Text)) { //設(shè)置郵件發(fā)送人和接收人 MailMessage message = null; if (txtTo.Text.IndexOf(",") != -1) { string[] strEmail = txtTo.Text.Split(','); string sumEmail = ""; for (int i = 0; i < strEmail.Length; i++) { sumEmail = strEmail[i]; message = new MailMessage(new MailAddress(txtSend.Text), new MailAddress(sumEmail)); SendEmail(message); } } else { message = new MailMessage(new MailAddress(txtSend.Text), new MailAddress(txtTo.Text)); SendEmail(message); } MessageBox.Show("發(fā)送成功"); } } catch { MessageBox.Show("發(fā)送失敗!"); } } private void frmSend_FormClosing(object sender, FormClosingEventArgs e) { DialogResult = DialogResult.OK; } #region 驗(yàn)證輸入為Email /// <summary> /// 驗(yàn)證輸入為Email /// </summary> /// <param name="str"></param> /// <returns></returns> public static bool validateEmail(string str) { return Regex.IsMatch(str, @"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"); } #endregion }
partial class frmSend { /// <summary> /// 必需的設(shè)計(jì)器變量。 /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// 清理所有正在使用的資源。 /// </summary> /// <param name="disposing">如果應(yīng)釋放托管資源,為 true;否則為 false。</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows 窗體設(shè)計(jì)器生成的代碼 /// <summary> /// 設(shè)計(jì)器支持所需的方法 - 不要 /// 使用代碼編輯器修改此方法的內(nèi)容。 /// </summary> private void InitializeComponent() { this.txtContent = new System.Windows.Forms.TextBox(); this.txtSubject = new System.Windows.Forms.TextBox(); this.txtPort = new System.Windows.Forms.TextBox(); this.txtServer = new System.Windows.Forms.TextBox(); this.txtPwd = new System.Windows.Forms.TextBox(); this.txtName = new System.Windows.Forms.TextBox(); this.txtTo = new System.Windows.Forms.TextBox(); this.txtSend = new System.Windows.Forms.TextBox(); this.label8 = new System.Windows.Forms.Label(); this.label7 = new System.Windows.Forms.Label(); this.label6 = new System.Windows.Forms.Label(); this.label5 = new System.Windows.Forms.Label(); this.label4 = new System.Windows.Forms.Label(); this.label3 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label(); this.label1 = new System.Windows.Forms.Label(); this.btnSend = new System.Windows.Forms.Button(); this.SuspendLayout(); // // txtContent // this.txtContent.Location = new System.Drawing.Point(23, 143); this.txtContent.Multiline = true; this.txtContent.Name = "txtContent"; this.txtContent.ScrollBars = System.Windows.Forms.ScrollBars.Vertical; this.txtContent.Size = new System.Drawing.Size(519, 100); this.txtContent.TabIndex = 7; // // txtSubject // this.txtSubject.Location = new System.Drawing.Point(88, 94); this.txtSubject.Name = "txtSubject"; this.txtSubject.Size = new System.Drawing.Size(186, 21); this.txtSubject.TabIndex = 6; // // txtPort // this.txtPort.Location = new System.Drawing.Point(356, 62); this.txtPort.Name = "txtPort"; this.txtPort.Size = new System.Drawing.Size(186, 21); this.txtPort.TabIndex = 5; // // txtServer // this.txtServer.Location = new System.Drawing.Point(88, 63); this.txtServer.Name = "txtServer"; this.txtServer.Size = new System.Drawing.Size(186, 21); this.txtServer.TabIndex = 4; // // txtPwd // this.txtPwd.Location = new System.Drawing.Point(356, 34); this.txtPwd.Name = "txtPwd"; this.txtPwd.PasswordChar = '*'; this.txtPwd.Size = new System.Drawing.Size(186, 21); this.txtPwd.TabIndex = 3; // // txtName // this.txtName.Location = new System.Drawing.Point(88, 35); this.txtName.Name = "txtName"; this.txtName.Size = new System.Drawing.Size(186, 21); this.txtName.TabIndex = 2; // // txtTo // this.txtTo.Location = new System.Drawing.Point(356, 6); this.txtTo.Name = "txtTo"; this.txtTo.Size = new System.Drawing.Size(186, 21); this.txtTo.TabIndex = 1; // // txtSend // this.txtSend.Location = new System.Drawing.Point(88, 6); this.txtSend.Name = "txtSend"; this.txtSend.Size = new System.Drawing.Size(186, 21); this.txtSend.TabIndex = 0; // // label8 // this.label8.AutoSize = true; this.label8.Location = new System.Drawing.Point(15, 121); this.label8.Name = "label8"; this.label8.Size = new System.Drawing.Size(65, 12); this.label8.TabIndex = 12; this.label8.Text = "郵件內(nèi)容:"; // // label7 // this.label7.AutoSize = true; this.label7.Location = new System.Drawing.Point(15, 93); this.label7.Name = "label7"; this.label7.Size = new System.Drawing.Size(65, 12); this.label7.TabIndex = 11; this.label7.Text = "郵件主題:"; // // label6 // this.label6.AutoSize = true; this.label6.Location = new System.Drawing.Point(290, 65); this.label6.Name = "label6"; this.label6.Size = new System.Drawing.Size(53, 12); this.label6.TabIndex = 14; this.label6.Text = "端口號(hào):"; // // label5 // this.label5.AutoSize = true; this.label5.Location = new System.Drawing.Point(21, 65); this.label5.Name = "label5"; this.label5.Size = new System.Drawing.Size(53, 12); this.label5.TabIndex = 17; this.label5.Text = "服務(wù)器:"; // // label4 // this.label4.AutoSize = true; this.label4.Location = new System.Drawing.Point(278, 37); this.label4.Name = "label4"; this.label4.Size = new System.Drawing.Size(77, 12); this.label4.TabIndex = 16; this.label4.Text = "發(fā)件人密碼:"; // // label3 // this.label3.AutoSize = true; this.label3.Location = new System.Drawing.Point(9, 37); this.label3.Name = "label3"; this.label3.Size = new System.Drawing.Size(77, 12); this.label3.TabIndex = 15; this.label3.Text = "發(fā)件人名稱:"; // // label2 // this.label2.AutoSize = true; this.label2.Location = new System.Drawing.Point(290, 9); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(53, 12); this.label2.TabIndex = 13; this.label2.Text = "收件人:"; // // label1 // this.label1.AutoSize = true; this.label1.Location = new System.Drawing.Point(21, 9); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(53, 12); this.label1.TabIndex = 18; this.label1.Text = "發(fā)件人:"; // // btnSend // this.btnSend.Location = new System.Drawing.Point(217, 251); this.btnSend.Name = "btnSend"; this.btnSend.Size = new System.Drawing.Size(116, 23); this.btnSend.TabIndex = 9; this.btnSend.Text = "發(fā)送"; this.btnSend.UseVisualStyleBackColor = true; this.btnSend.Click += new System.EventHandler(this.btnSend_Click); // // frmSend // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(551, 279); this.Controls.Add(this.txtContent); this.Controls.Add(this.txtSubject); this.Controls.Add(this.txtPort); this.Controls.Add(this.txtServer); this.Controls.Add(this.txtPwd); this.Controls.Add(this.txtName); this.Controls.Add(this.txtTo); this.Controls.Add(this.txtSend); this.Controls.Add(this.label8); this.Controls.Add(this.label7); this.Controls.Add(this.label6); this.Controls.Add(this.label5); this.Controls.Add(this.label4); this.Controls.Add(this.label3); this.Controls.Add(this.label2); this.Controls.Add(this.label1); this.Controls.Add(this.btnSend); this.Name = "frmSend"; this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this.Text = "使用SMTP服務(wù)發(fā)送不帶附件的郵件"; this.Load += new System.EventHandler(this.frmSend_Load); this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.frmSend_FormClosing); this.ResumeLayout(false); this.PerformLayout(); } #endregion private System.Windows.Forms.TextBox txtContent; private System.Windows.Forms.TextBox txtSubject; private System.Windows.Forms.TextBox txtPort; private System.Windows.Forms.TextBox txtServer; private System.Windows.Forms.TextBox txtPwd; private System.Windows.Forms.TextBox txtName; private System.Windows.Forms.TextBox txtTo; private System.Windows.Forms.TextBox txtSend; private System.Windows.Forms.Label label8; private System.Windows.Forms.Label label7; private System.Windows.Forms.Label label6; private System.Windows.Forms.Label label5; private System.Windows.Forms.Label label4; private System.Windows.Forms.Label label3; private System.Windows.Forms.Label label2; private System.Windows.Forms.Label label1; private System.Windows.Forms.Button btnSend; }
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