private DataTable dtDjlb=null;
...private void button1_Click(object sender, System.EventArgs e)
{ dtDjlb=UsualProcess.ExeTable("select kfbh,kwbh,wpbh,sjc from b_kwkcz");
dtDjlb.PrimaryKey=new DataColumn[]{dtDjlb.Columns["sjc"]};
}執行后發生錯誤:
An unhandled exception of type 'System.ArgumentException' occurred in system.data.dllAdditional information: These columns don't currently have unique values.
字段sjc為時間戳類型
請各位指點!
-----------------------------------------
kfbh kwbh wpbh sjc
001 001 001 0x000000000000106B
006 002 001 0x000000000000106A
WPBH varchar no 30 no no no
KFBH varchar no 10 no no no
KWBH varchar no 10 no no no
SJC timestamp no 8 no (n/a) (n/a)
可一般作为关键字后,字段会自动变为not null的