private void SetUp() 
{ // 用2个Table和1和Relation创建
DataSet MakeDataSet(); 
// 数据绑定 
dataGrid1.SetDataBinding(myDataSet, "Customers"); 
//添加样式 
AddCustomDataTableStyle();
 }

------解决方案--------------------

DataSet myDataSet1  =  new  DataSet();   
string sql1="select id as 序号,address as 网址,name as 名称,bz as 说明 from usermanage";  
DataTable dt=DB.DataAccess.GetAccessData(sql1);
//dt.TableName = "dt";
myDataSet1.Tables.Add(dt);
dataGrid1.SetDataBinding(myDataSet1,  "dt"); 
AddCustomDataTableStyle();