Question

C# 程序走到da.Fill(ds);就抛异常，求大神指点！！！！！

string connstr, StrSQL;

StrSQL = "SELECT * FROM table1 WHERE companylast ='" + this.comboBox1.Text.Trim() +"'and Names = '" + this.comboBox2.Text.Trim() + "'";
// elect id from bbs_admin where UserName='" + uName + "' AND UserPassword = '" + uPwd + "'"
connstr = "provider=Microsoft.jet.oledb.4.0;data source=" + Application.StartupPath + "\\ykzdkhcj.mdb";
OleDbConnection conn1 = new OleDbConnection(connstr);
conn1.Open();

OleDbDataAdapter da = new OleDbDataAdapter(StrSQL, conn1);
DataSet ds = new DataSet();
da.Fill(ds);
DataTable mytable = new DataTable();
mytable = ds.Tables[0];

Answer 1

一般来说这里报异常都是你的数据库里面没有得到所要的信息！

Answer 2

数据库必须要有主键，否则da就执行不了

Answer 3

Answer 4

抛什么异常呢？