本文实例为大家分享了C#实现弹窗提示输入密码的具体代码，供大家参考，具体内容如下
String PM = Interaction.InputBox("请输入密码", "输入密码", "", 100, 100);
if (PM != "2222")
{
MessageBox.Show("请输入正确的密码谢谢！！！！！");
return;
}
如果需要输入的密码为加密****，则需要自定义控件，直接调用该类即可InputBox
使用方法为：
string inMsg = InputBox.ShowInputBox("请输入管理员(admin)的密码", string.Empty);
if (inMsg.Trim() != string.Empty)
{
MessageBox.Show(inMsg);
}
InputBox类
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
public class InputBox : System.Windows.Forms.Form
{
private TextBox textBox_Data;
private Button button_Enter;
private Button button_Esc;
private System.ComponentModel.Container components = null;
private InputBox()
{
InitializeComponent();
this.TopMost = true;
//this.StartPosition = FormStartPosition.CenterScreen;
//inputbox.Location.X = 0; inputbox.Location.Y = 0;
//inputbox.StartPosition = FormStartPosition.CenterScreen;
//inputbox.Left = 0;
//inputbox.Top = 0;
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose(disposing);
}
private void InitializeComponent()
{
this.textBox_Data = new System.Windows.Forms.TextBox();
this.button_Enter = new System.Windows.Forms.Button();
this.button_Esc = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// textBox_Data
//
this.textBox_Data.Location = new System.Drawing.Point(8, 8);
this.textBox_Data.Name = "textBox_Data";
this.textBox_Data.PasswordChar = '*';
this.textBox_Data.Size = new System.Drawing.Size(230, 21);
this.textBox_Data.TabIndex = 2;
this.textBox_Data.KeyDown += new System.Windows.Forms.KeyEventHandler(this.textBox_Data_KeyDown);
//
// button_Enter
//
this.button_Enter.Location = new System.Drawing.Point(25, 43);
this.button_Enter.Name = "button_Enter";
this.button_Enter.Size = new System.Drawing.Size(75, 23);
this.button_Enter.TabIndex = 3;
this.button_Enter.Text = "确 认";
this.button_Enter.UseVisualStyleBackColor = true;
this.button_Enter.Click += new System.EventHandler(this.button_Enter_Click);
//
// button_Esc
//
this.button_Esc.Location = new System.Drawing.Point(140, 43);
this.button_Esc.Name = "button_Esc";
this.button_Esc.Size = new System.Drawing.Size(75, 23);
this.button_Esc.TabIndex = 4;
this.button_Esc.Text = "取 消";
this.button_Esc.UseVisualStyleBackColor = true;
this.button_Esc.Click += new System.EventHandler(this.button_Esc_Click);
//
// InputBox
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(250, 80);
this.Controls.Add(this.button_Esc);
this.Controls.Add(this.button_Enter);
this.Controls.Add(this.textBox_Data);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
this.MaximizeBox = false;
this.MinimizeBox = false;
this.ControlBox = false;
this.Name = "InputBox";
this.Text = "InputBox";
this.ResumeLayout(false);
this.PerformLayout();
}
//对键盘进行响应
private void textBox_Data_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter) { button_Enter_Click(sender, e); }
else if (e.KeyCode == Keys.Escape) { button_Esc_Click(sender, e); }
}
private void button_Enter_Click(object sender, EventArgs e)
{
this.Close();
}
private void button_Esc_Click(object sender, EventArgs e)
{
textBox_Data.Text = string.Empty; this.Close();
}
//显示InputBox
public static string ShowInputBox(int Left, int Top, string Title, string Prompt, string DefaultResponse)
{
InputBox inputbox = new InputBox();
if (Title.Trim() != string.Empty) inputbox.Text = Title;
if (DefaultResponse.Trim() != string.Empty) inputbox.textBox_Data.Text = DefaultResponse;
inputbox.ShowDialog();
inputbox.Left = Left; inputbox.Top = Top;
return inputbox.textBox_Data.Text;
}
public static string ShowInputBox(FormStartPosition Position, string Title, string Prompt, string DefaultResponse)
{
InputBox inputbox = new InputBox();
inputbox.StartPosition = Position;
if (Title.Trim() != string.Empty) inputbox.Text = Title;
if (DefaultResponse.Trim() != string.Empty) inputbox.textBox_Data.Text = DefaultResponse;
inputbox.ShowDialog();
return inputbox.textBox_Data.Text;
}
public static string ShowInputBox()
{
return ShowInputBox(FormStartPosition.CenterScreen, string.Empty, string.Empty, string.Empty);
}
public static string ShowInputBox(string Title)
{
return ShowInputBox(FormStartPosition.CenterScreen, Title, string.Empty, string.Empty);
}
public static string ShowInputBox(string Title, string Prompt)
{
return ShowInputBox(FormStartPosition.CenterScreen, Title, Prompt, string.Empty);
}
public static string ShowInputBox(string Title, string Prompt, string DefaultResponse)
{
return ShowInputBox(FormStartPosition.CenterScreen, Title, Prompt, DefaultResponse);
}
// 调用
// string inMsg = InputBox.ShowInputBox("请输入管理员(admin)的密码", string.Empty);
// if (inMsg.Trim() != string.Empty)
// {
// MessageBox.Show(inMsg);
// }
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
