static void Main (string[] Args){Practice1, Let the user enter a code name, find a data (car,info), and display2, output hint, input 1 Delete the data, enter 2 to modify data, enter 3 to add data3, when the user input 1, the detected data deleted4, when the user input 2, prompted to enter other values, the primary key is not modified, input completed, modify this data5. When the user enters 3, prompts the user to enter all the columns, and then saves to the database String [] AR = new string[] {
1: GPS/DR combined Positioning Method
2: GPS/mm combined Positioning Method
Application of Improved combined filtering in GPS/DR combined Positioning
Original Author: HUANG Zhi, Zhong Zhihua
I. Preface
Since the Global Position System (GPS) was officially put into use in 1994, GPS-based vehicle navigation technology has been widely used. GPS signals are transmitted in a straight line, with
access program type method to return column data. Dim Dr as oracledatareader = cmd. executereader () 'vb. net dr. read () label1.text = dr. item ("dname") 'retrieve by column name label1.text = dr. item (0) 'retrieve the first column in the select list label1.text = dr. ge
The ospf protocol for layer-3 devices is only suitable for small networks because of the 16-hop limitation of the rip Protocol and other reasons in the information interaction between different network segments. Therefore, ospf protocol has been developed. Ospf is an Open Shortest Path priority protocol. It is one of the gateway protocols used within the autonomous region and is developed based on the link status. There are five network types of ospf: 1. Point-to-point type. As proposed by Cisco
Label:A="""Dr. Getstr ("kh"), Dr. Getstr ("XM"), Dr. Getstr ("XH"), Dr. Getstr ("Sfzh"), Dr. Getstr ("XBDM"), Dr. Getstr ("Bjxx"), Dr. Getstr ("WYYZDM"),
///
/// Add the sequence number to the datatable
///
///
///
Public static void dbdatatableaddxuhao (datatable DT, string colxuhao ){
For (INT I = 0; I DT. Rows [I] [colxuhao] = I + 1;
}
}
/// /// Add the total row at the end of the datatable. The last two parameters set the range of rows to be total. datatablesummulticol (DT, 3rd, 5) // The total rows are, 4, 5, and 6.
/// /// /// /// /// Public static datarow dbdatatablesumrowswithcolrange (datatable DT, int ncolheji, int nmin
= ' #0099FF '}};Series lastseriesobj = new Series ();Lastseriesobj.id = 1;Lastseriesobj.name = "Last year energy consumption";Lastseriesobj.type = "line"; Linear graph renderingLastseriesobj.data = new listLastseriesobj.itemstyle = new ItemStyle {normal = new normal {color = ' #00CC00 '}};foreach (DataRow dr in Dt. Rows){Categorylist.add (Dr[0]. ToString () + "month");THISSERIESOBJ.DATA.ADD (
ADO DataReader Class
1. Creating DataReader Objects
As mentioned earlier, there is no constructor to create the DataReader object. Usually we use the Executerader method of the command class to create the DataReader object:
SqlCommand cmd = new SqlCommand (commandtext,connectionobject)
SqlDataReader dr = cmd. ExecuteReader ();
The most common use of the DataReader class is to retrieve the records returned by the SQL query or stored procedure. It
Word documents, and the use of Aspose. word Control and Aspose. cell Control for templated export of Word documents and Excel documents
The role of bookmarks is very important. Otherwise, the records of the collection cannot be parsed and bound to the WORD interface. In the bookmarks dialog box, we can see that there are two positions in the above document, the start and end positions of the bookmarks.
In this way, after the template is designed, the second step is to generate relevant objects
increases, the number of adjacent links increases dramatically.The LSA flood link status router will flood its link status packets during OSPF initialization and topology changes. In a multi-channel access network, the traffic during this flooding process may become very large.Solution: A Router (DR) is used to manage the number of adjacent links and the LSA flooding in a multi-channel access network ). (It can be said that a person is elected in the
R1 (config) # router ospf 10
R1 (config-router) # net 192.168.12.0 0.0.255 a 0
R1 (config-router )#
* Dec 6 05:51:32. 975: OSPF: Interface Ethernet0/0 going Up
* Dec 6 05:51:32. 975: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0/0 from 192.168.12.1
* Dec 6 05:51:33. 475: OSPF: Build router LSA for area 0, router ID 1.1.1.1, seq 0x80000001, process 10
R1 (config-router )#
* Dec 6 05:51:42. 807: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0/0 from 192.168.12.1
R1 (config-router )#
* Dec 6
Label:Conclusion: When the DataReader is placed in the using method, the resources are freed automatically, and if exception handling occurs halfway through, the resources that are consumed are also released.test Process : Because there is no record of all the sub-process, but the results of a general explanation, interested children shoes can be tested by themselves.First, the normal processing flow: 1 Mysqldatareader dr = Mysqlhelper.executereader (
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.