麻烦各位大神帮忙看看C# sql
string connstg = "server=.;database=Scholarship;integrated security=SSPI";
SqlConnection conn = new SqlConnection(connstg);
string Sql="select " + comboBox1.Text + " from zhuanye where UserNum='" + num + "'";
conn.Open();
SqlCommand cmd = new SqlCommand(Sql, conn);
SqlDataReader sdr =cmd.ExecuteReader();
sdr.Read();
if (sdr.HasRows)
{
MessageBox.Show("添加成功!");
textBox1.Text = "";
}
这段代码,查询结果为真,判断的时候结果一直为假
梦清川
2017/11/23 15:07- c#
- 数据库
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