c#:winform 获取本地打印机列表（下拉列表实现）

效果

 步骤

1、添加控件

①添加一个Label:作为标题控件，名为：Bigtitle

②添加一个ComboBox控件，名为：Printer_list

2、加载打印机列表

在窗体的构造函数或 Load 事件中加载打印机列表

public Form1()
{
    InitializeComponent();//加载窗体内容
    LoadPrinters(); // 加载打印机列表
}

写入方法

//引入打印机列表数据
private void LoadPrinters()
{
    Printer_list.Items.Clear();//清除现有打印机列表
    //遍历所有安装的打印机
    foreach (string printer in PrinterSettings.InstalledPrinters)
    {
        //将每个打印机名称添加到 ComboBox 中
        Printer_list.Items.Add(printer);
    }
    // 默认选择第一个打印机
    if (Printer_list.Items.Count > 0)
    {
        Printer_list.SelectedIndex = 0; 
    }
}

完整代码

App.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
	<startup useLegacyV2RuntimeActivationPolicy="true"> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
    </startup>
</configuration>

Form1.cs 

using System;
using System.Windows.Forms;
using System.Drawing.Printing;

namespace Getprint
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();//加载窗体内容
            LoadPrinters(); // 加载打印机列表
        }
       
        private void Printer_list_SelectedIndexChanged(object sender, EventArgs e)
        {
           
        }
        //引入打印机列表数据
        private void LoadPrinters()
        {
            Printer_list.Items.Clear();//清除现有打印机列表
            //遍历所有安装的打印机
            foreach (string printer in PrinterSettings.InstalledPrinters)
            {
                //将每个打印机名称添加到 ComboBox 中
                Printer_list.Items.Add(printer);
            }
            // 默认选择第一个打印机
            if (Printer_list.Items.Count > 0)
            {
                Printer_list.SelectedIndex = 0; 
            }
        }
        private void Bigtitle_Click(object sender, EventArgs e)
        {

        }

        private void Printer_list_SelectedIndexChanged_1(object sender, EventArgs e)
        {

        }
    }
}

Form1.Designer.cs

namespace Getprint
{
    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.Bigtitle = new System.Windows.Forms.Label();
            this.printDialog1 = new System.Windows.Forms.PrintDialog();
            this.Printer_list = new System.Windows.Forms.ComboBox();
            this.SuspendLayout();
            // 
            // Bigtitle
            // 
            this.Bigtitle.AutoSize = true;
            this.Bigtitle.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
            this.Bigtitle.Location = new System.Drawing.Point(294, 22);
            this.Bigtitle.Name = "Bigtitle";
            this.Bigtitle.Size = new System.Drawing.Size(178, 20);
            this.Bigtitle.TabIndex = 0;
            this.Bigtitle.Text = "获取 打印机 列表";
            this.Bigtitle.Click += new System.EventHandler(this.Bigtitle_Click);
            // 
            // printDialog1
            // 
            this.printDialog1.UseEXDialog = true;
            // 
            // Printer_list
            // 
            this.Printer_list.Font = new System.Drawing.Font("宋体", 12F);
            this.Printer_list.FormattingEnabled = true;
            this.Printer_list.Location = new System.Drawing.Point(201, 60);
            this.Printer_list.Name = "Printer_list";
            this.Printer_list.Size = new System.Drawing.Size(371, 28);
            this.Printer_list.Sorted = true;
            this.Printer_list.TabIndex = 2;
            this.Printer_list.SelectedIndexChanged += new System.EventHandler(this.Printer_list_SelectedIndexChanged_1);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 15F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(800, 450);
            this.Controls.Add(this.Printer_list);
            this.Controls.Add(this.Bigtitle);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Label Bigtitle;
        private System.Windows.Forms.PrintDialog printDialog1;
        private System.Windows.Forms.ComboBox Printer_list;
    }
}