Question

c# SQL数据操作问题为什么删除会失败

private void button1_Click(object sender, EventArgs e)
{
objCmd = new SqlCommand("delete from student where student_id = '" + textBox1.Text + "' or Nname = '" + textBox2.Text + "'",objCn);
objCmd.CommandType = CommandType.Text;
try
{
objCmd.ExecuteNonQuery();
MessageBox.Show("删除成功");
}
catch
{
MessageBox.Show("删除失败");
}
}

Answer 1

objCmd = new SqlCommand("delete from student where student_id = '" + textBox1.Text + "' or Nname = '" + textBox2.Text + "'",objCn);
objCmd.CommandType = CommandType.Text;
try
{
objCmd.ExecuteNonQuery();
MessageBox.Show("删除成功");
}
catch
{
MessageBox.Show("删除失败");
}
}
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