c# - 为 INSERT 方法添加更多文本框

Question

目前，我有 private void btnInsertStudentNumberAdmin_Click(object sender, EventArgs e) {

这是我的 m MySqlConnection conn = connection(); conn.Open(); MySqlCommand cmd = new MySqlCommand(); cmd.tAverage", studentInsert); prevID(conn, cmd); }

Answer 1

您需要更改方法接受附加参数

public static void insertStudent(string personID, string  studentNumber,string  gradePointAverage , string majorFieldt)

请注意，您需要根据为相关参数提供 n 个数据库的列数据类型来提供正确的类型。例如，如果 personID 在数据库中是整数，则应将参数更改为int personID

使用所有参数更改您的 sql 语句

INSERT INTO student(personID, studentNumber, gradePointAverage , majorField ) VALUES (@personID, @studentNumber, @gradePointAverage , @majorField)

并使用设置参数值

cmd.Parameters.AddWithValue("@personID", personID);
cmd.Parameters.AddWithValue("@studentNumber", studentNumber);
cmd.Parameters.AddWithValue("@gradePointAverage", gradePointAverage );
cmd.Parameters.AddWithValue("@majorField", majorField );

您可以如下调用上述方法

private void btnInsertStudentNumberAdmin_Click(object sender, EventArgs e)
{
  studentHelperClass.insertStudent(txtInsertStudentNumber.Text, txtstudentNumber.Text, txtgradePointAverage.Text , txtmajorField.Text );
}