//提交数据
private void button6_Click(object sender, EventArgs e)
{
//Excel路径
var File_Path = "学生信息.xls";
//SQL语句
string sql = "";
//
if (this.textBox2.Text.Trim() == "")
{
MessageBox.Show("请输入姓名");
return;
}
if (inse_Switch == true)
{
//SQL语句//插入数据
sql = "insert into [学生信息$](学号,姓名,班级,电话号码,状态) values ({0},'{1}','{2}','{3}','{4}')";
sql = string.Format(sql, this.textBox2.Text, this.textBox3.Text, this.textBox4.Text, this.textBox5.Text, "正常");
inse_Switch = false;
}
else
{
//修改数据
sql = "update [学生信息$] set 姓名 ='{0}' ,班级 = '{1}',电话号码= '{2}',状态 = '正常' where 学号 = {3}";
sql = string.Format(sql, this.textBox3.Text, this.textBox4.Text, this.textBox5.Text, this.textBox1.Text);
}
//提交
Excel2.Update(sql, File_Path);
//查询全部信息
this.textBox1.Text = ""; //赋值为空，查询全部信息
button1_Click(null, null); //触发按钮，查询信息
}
public void OpenFile()
{
Excel2 excel = new Excel2(@"E:\Trabajo\IS2\IS2 copia\IS2 copia\48H\test.xlsx", 1);
System.Windows.Forms.MessageBox.Show(excel.ReadCell(0, 0));
excel.Close();
}
//创建表格
private void button5_Click(object sender, EventArgs e)
{
var File_Path = "学生信息.xls";
string sql = "CREATE TABLE 学生信息([学号] INT,[姓名] VarChar,[班级] VarChar,[电话号码] VarChar,[状态] VarChar)";
//执行SQL语句
Excel2.Update(sql, File_Path);
}
public void WriteData()
{
//El 1 indica el Sheet
Excel2 excel = new Excel2(@"E:\Trabajo\IS2\IS2 copia\IS2 copia\48H\test.xlsx", 1);
excel.WriteToCell(0, 0, "TEST 2");
excel.SaveAs(@"E:\Trabajo\IS2\IS2 copia\IS2 copia\48H\test2.xlsx");
excel.Close();
}
//删除按钮//其实在文件中还是存在的
private void button3_Click(object sender, EventArgs e)
{
//指定文件位置
var filepath = "学生信息.xls";
//判断学号是否为空
if (this.textBox1.Text.Trim() == "")
{
MessageBox.Show("请输入学号");
return;
}
else
{
//构建查询语句
string sql = "update [学生信息$] set 状态 = '删除' where 学号 = {0}";
sql = string.Format(sql, this.textBox1.Text);
//更新数据
Excel2.Update(sql, filepath);
//清空查询编号
this.textBox1.Text = "";
//执行查询操作
button1_Click(null, null);
}
}
