就会出现报错
这是代码:
private void button1_Click(object sender, EventArgs e)
{
string xuehao = this.textBox1.Text.Trim();
string strsql = "select * form kqlog where xuehao='" + xuehao + "' and type='请假' ";
SqlConnection con = GetCon();
con.Open();
SqlDataAdapter sad = new SqlDataAdapter(strsql, con);
DataTable dt1 = new DataTable();
sad.Fill(dt1);
dataGridView1.DataSource = dt1;
con.Close();
}
麻烦帮我改一下我的错误的,谢谢