A、 dgvData.DataSource = ds; dgvData.DataMember = ds.Tables["table1"];
B、 dgvData.DataMember = ds;
C、 dgvData.DataSource = new DataView(ds.Tables["table1"]);
D、 dgvData.DataSource = ds.Tables["table1"]; dgvData.DataMember = ds;
答案:AC
解析:
A、 dgvData.DataSource = ds; dgvData.DataMember = ds.Tables["table1"];
B、 dgvData.DataMember = ds;
C、 dgvData.DataSource = new DataView(ds.Tables["table1"]);
D、 dgvData.DataSource = ds.Tables["table1"]; dgvData.DataMember = ds;
答案:AC
解析:
A. select max(score) from grade
B. select top 1 score from grade order by score asc
C. Select min(score) from grade
D. select top 1 score from grade order by score desc
解析:
A. override
B. abstract
C. virtual
D. static
解析:
A. INSERT INTO Employee(Name,Gender,Age,Rank) values(‘张朝阳’,’男’,48,’201’)
B. INSERT INTO Employee(Name,Gender,Age,Rank) values(“张朝阳”,”男”,48,”201”)
C. INSERT INTO Employee(Name,Gender,Age) values(‘张朝阳’,’男’,48,’201’)
D. INSERT INTO Employee(Name,Gender,Age,Rank) value(‘张朝阳’,’男’,48,’201’)
解析:
A. SelectAll()
B. ExecuteNonQuery()
C. ExecuteReader()
D. ExecuteScalar()
解析:
A. 10%3=3
B. 10/3=3
C. 10%3=1
D. 10/3=1
解析:
A. ExecuteNonQuery();
B. Execute();
C. ExecuteScalar();
D. ExecuteReader();
解析:
A. DropDownStyle获取或设置组合框控件的样式,为一个枚举值
B. SelectedIndex获取ComboBox 中当前选中项的从1开始的索引
C. SelectedItem获取 ComboBox 中的当前选中的项
D. Text获取 ComboBox 中当前选中项的文本
解析:
A. 表现层
B. 业务逻辑层
C. 数据访问层
D. 实体类层
解析:
A. 表示层
B. 业务逻辑层
C. 数据访问层
D. 数据库层
解析:
A. Rows
B. Columns
C. Constraints
D. DataSet
解析: