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public DataSet ConnectDB(string cmmStr)
{
string connStr= "Provider=Microsoft.Jet.OLEDB.4.0;DataSource~/App_Data\\ThreeLayer.mdb";
OleDbConnection conn = new OleDbConnection(connStr);
OleDbDataAdapter odc = new OleDbDataAdapter(cmmStr,conn);
DataSet ds = new DataSet();
odc.Fill(ds);
try
{
conn.Open();
return ds;
}
catch (OleDbException oe)
{
conn.Close();
}
}
return ds.Tables(0)
conn.Open(); Òª·ÅÔÚÇ°Ãæ
try
{
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