1) be familiar with label, textbox, button, SqlConnection, SqlCommand, DataGridView, DataSet and other controls 2) New Form Form1, complete student information (student number, name, sex, date of birth and class) entry. 3) Create a new form Form2, to realize view, modify, and delete data. 4) Create a form Form3, can be achieved through the login screen to jump to Form1.

WindowsFormsApplication2
........................\Backup
........................\......\WindowsFormsApplication2
........................\......\........................\Form1.Designer.cs
........................\......\........................\Form1.cs
........................\......\........................\Form1.resx
........................\......\........................\Form2.Designer.cs
........................\......\........................\Form2.cs
........................\......\........................\Form2.resx
........................\......\........................\Form3.Designer.cs
........................\......\........................\Form3.cs
........................\......\........................\Form3.resx
........................\......\........................\Form4.Designer.cs
........................\......\........................\Form4.cs
........................\......\........................\Form4.resx
........................\......\........................\JiaoWuDataSet.Designer.cs
........................\......\........................\JiaoWuDataSet.xsc
........................\......\........................\JiaoWuDataSet.xsd
........................\......\........................\JiaoWuDataSet.xss
........................\......\........................\JiaoWuDataSet1.Designer.cs
........................\......\........................\JiaoWuDataSet1.xsc
........................\......\........................\JiaoWuDataSet1.xsd
........................\......\........................\JiaoWuDataSet1.xss
........................\......\........................\Program.cs
........................\......\........................\Properties
........................\......\........................\..........\AssemblyInfo.cs
........................\......\........................\..........\Resources.Designer.cs
........................\......\........................\..........\Resources.resx
........................\......\........................\..........\Settings.Designer.cs
........................\......\........................\..........\Settings.settings
........................\......\........................\WindowsFormsApplication2.csproj
........................\......\........................\app.config
........................\......\WindowsFormsApplication2.sln
........................\......\WindowsFormsApplication2.suo
........................\UpgradeLog.XML
........................\WindowsFormsApplication2
........................\........................\Form1.Designer.cs
........................\........................\Form1.cs
........................\........................\Form1.resx
........................\........................\Form2.Designer.cs
........................\........................\Form2.cs
........................\........................\Form2.resx
........................\........................\Form3.Designer.cs
........................\........................\Form3.cs
........................\........................\Form3.resx
........................\........................\Form4.Designer.cs
........................\........................\Form4.cs
........................\........................\Form4.resx
........................\........................\JiaoWuDataSet.Designer.cs
........................\........................\JiaoWuDataSet.cs
........................\........................\JiaoWuDataSet.xsc
........................\........................\JiaoWuDataSet.xsd
........................\........................\JiaoWuDataSet.xss
........................\........................\JiaoWuDataSet1.Designer.cs
........................\........................\JiaoWuDataSet1.cs
........................\........................\JiaoWuDataSet1.xsc
........................\........................\JiaoWuDataSet1.xsd
........................\........................\JiaoWuDataSet1.xss
........................\........................\Program.cs
........................\........................\Properties
............

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