using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Text;
using?System.Windows.Forms;
using?System.Data.SqlClient;
namespace?Ex16_05
{
????public?partial?class?Form1?:?Form
????{
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}
????????public?SqlConnection?con?=?null;//實義數據庫連接對象
????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????if?（textBox1.Text?==?““）
????????????{
????????????????MessageBox.Show（textBox1.Tag.ToString（）+“不能為空““提示“）;
????????????????textBox1.Focus（）;
????????????????return;
????????????}
????????????if?（textBox2.Text?==?““）
????????????{
????????????????MessageBox.Show（textBox2.Tag.ToString（）?+?“不能為空“?“提

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2010-04-06?13:10??Ex16_05\
?????文件?????????910??2007-07-11?11:34??Ex16_05.sln
?????文件???????27648??2007-07-11?11:34??Ex16_05.suo
?????目錄???????????0??2010-04-06?13:10??Ex16_05\bin\
?????目錄???????????0??2010-04-06?13:10??Ex16_05\bin\Debug\
?????文件???????24576??2007-07-11?11:34??Ex16_05\bin\Debug\Ex16_05.exe
?????文件???????26112??2007-07-11?11:34??Ex16_05\bin\Debug\Ex16_05.pdb
?????文件????????5658??2007-07-11?11:34??Ex16_05\bin\Debug\Ex16_05.vshost.exe
?????文件????????3221??2007-07-11?11:34??Ex16_05\Ex16_05.csproj
?????文件????????2227??2007-07-11?11:34??Ex16_05\Form1.cs
?????文件????????8105??2007-07-11?11:34??Ex16_05\Form1.Designer.cs
?????文件????????5814??2007-07-11?11:34??Ex16_05\Form1.resx
?????目錄???????????0??2010-04-06?13:10??Ex16_05\obj\
?????目錄???????????0??2010-04-06?13:10??Ex16_05\obj\Debug\
?????文件?????????842??2007-07-11?11:34??Ex16_05\obj\Debug\Ex16_05.csproj.GenerateResource.Cache
?????文件???????24576??2007-07-11?11:34??Ex16_05\obj\Debug\Ex16_05.exe
?????文件?????????180??2007-07-11?11:34??Ex16_05\obj\Debug\Ex16_05.Form1.resources
?????文件???????26112??2007-07-11?11:34??Ex16_05\obj\Debug\Ex16_05.pdb
?????文件?????????180??2007-07-11?11:34??Ex16_05\obj\Debug\Ex16_05.Properties.Resources.resources
?????目錄???????????0??2010-04-06?13:10??Ex16_05\obj\Debug\TempPE\
?????文件?????????268??2007-07-11?11:34??Ex16_05\obj\Ex16_05.csproj.FileList.txt
?????文件?????????466??2007-07-11?11:34??Ex16_05\Program.cs
?????目錄???????????0??2010-04-06?13:10??Ex16_05\Properties\
?????文件????????1162??2007-07-11?11:34??Ex16_05\Properties\AssemblyInfo.cs
?????文件????????2868??2007-07-11?11:34??Ex16_05\Properties\Resources.Designer.cs
?????文件????????5612??2007-07-11?11:34??Ex16_05\Properties\Resources.resx
?????文件????????1090??2007-07-11?11:34??Ex16_05\Properties\Settings.Designer.cs
?????文件?????????249??2007-07-11?11:34??Ex16_05\Properties\Settings.settings