单项选择题
You create a Web site that is for members only. The behavior of the Web site changes according to the role of the user. The Web site uses the ASP.NET Membership control for creation of user accounts. You need to find out whether a user is a member of a particular role. What should you do? （）
A. Pass the user names and passwords to Membership.ValidateUser.
B. Pass the role names to User.IsInRole.
C. Pass the role names to Roles.RoleExists.
D. Pass the user names to Membership.GetUser.
相关考题
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单项选择题
You create a Web Form that displays a GridView. The GridViews data source is a DataSet named dsOrders. The DataSet contains two DataTables named Orders and OrderDetails. You create a relation between the two DataTables using the following code segment. (Line numbers are included for reference only.)01 dtOrders = dsOrders.Tables[“Orders”]; 02 dtOrderDetails = dsOrders.Tables[“OrderDetail”]; 03 colParent = dtOrders.Columns[“OrderID”]; 04 colChild = dtOrderDetails.Columns[“ParentOrderID”]; 05 dsOrders.Relations.Add(“Rell”, colParent, colChild, false); You need to find the cause of the exception being raised in line 05. What should you do? （）
A. Ensure that the child column and the parent column have the same names.
B. Ensure that the child table and the parent table have the same names.
C. Ensure that the child column and the parent column have the same data types.
D. Ensure that each row in the child table has a corresponding row in the parent table.
E. Ensure that the tables have an explicit relationship defined by a foreign key constraint in the database. -
多项选择题
You are creating a Web Form. You write the following code segment to create a SqlCommand object. SqlConnection conn = new.SqlConnection(connString); conn.Open(); SqlCommand cmd = conn.CreateCommand(); cmd.CommandText = “select cont(*) from Customers”; You need to display the number of customers in the Customers table. Which two code segments can you use to achieve this goal? （）
A. object customerCount = cmd.ExecuteScalar();lblCompanyName.Text = customerCount.ToString();
B. int customerCount = cmd.ExecuteNonQuery();lblCompanyName.Text = customerCount.ToString();
C. SqlDataReader dr = cmd.ExecuteReader();dr.Read();lblCompanyName.Text = dr[0].ToString();
D. SqlDataReader dr = cmd.ExecuteReader();dr.Read();lblCompanyName.Text = dr.ToString(); -
单项选择题
You are transferring records from one database to another. You need to decide whether you can use the SqlBulkCopy class to transfer the records. What should you do? （）
A. Ensure that the source database is Microsoft SQL Server.
B. Ensure that the destination database is Microsoft SQL Server.
C. Ensure that the column names in the source table match the column names in the destination table.
D. Ensure that the bulk copy program (bcp) utility is installed on the destination server.
