C#与SQL数据库学生成绩管理系统完整代码(2)

private void toolStripButton6_Click(object sender, EventArgs e) {

(); Form1 l = new Form1(); = true;

}

private void timer1_Tick(object sender, EventArgs e)

{

= "当前时间:" + + }

管理员管理界面

图

设计过程：

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此部分主要针对管理员的，可以添加和删除所有用户的账号和密码。

private void Form4_Load(object sender, EventArgs e)

{

();

= + "管理员，欢迎进入成绩管理系统！";

= false;

}

private void label1_Click(object sender, EventArgs e)

{

}

private void radioButton1_CheckedChanged(object sender, EventArgs e) {

if { = true; = true; }

}

private void radioButton2_CheckedChanged(object sender, EventArgs e) {

if { = true; = false; }

}

private void txtyhm_TextChanged(object sender, EventArgs e)

{

}

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private void button2_Click(object sender, EventArgs e) {

= = = "";

}

private void button3_Click(object sender, EventArgs e) {

(); Form1 l = new Form1(); = true;

}

private void label5_Click(object sender, EventArgs e) {

}

private void timer1_Tick(object sender, EventArgs e)

{

= "当前时间：" + + }

private void button1_Click(object sender, EventArgs e) {

string constr = "Password=617804;Persist Security Info=True;User ID=ywj;Initial Catalog=studentscore;Data Source=YANJING";

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