c#-2.0

DataGridview cells of one column can't have different type

白昼怎懂夜的黑 提交于 2019-11-30 05:41:03
问题 well I have a datagridview , and i have a column, all i want to do is controlling the cells in this column, sometimes make it combobox, sometimes textBox ....etc I can make the cells of a column have only one type , can i make many cells type in one column ? hope it is clear . 回答1: There are two ways to do this: Cast a DataGridViewCell to a certain cell type that exists. For example, convert a DataGridViewTextBoxCell to DataGridViewComboBoxCell type. Create a control and add it into the

jquery ajax with asp.net not working

筅森魡賤 提交于 2019-11-30 05:28:34
问题 I'm about to pull out any remaining hair that I have, so please help me out if you know what the problem might be... Thanks. All my googling and searching has not paid off either. First, I'm using jquery-1.7.2.min.js and ASP.net 2.0 web form. I'm trying to make an ajax call using jquery but keep getting syntax error/parse error messages. I've tried many different ways but they all result in the error when I set the dataType to json. Here's what I have: $.ajax({ type: "POST", url: "UserList

Get report from jasperserver using REST webservice and asp.net C#

左心房为你撑大大i 提交于 2019-11-30 05:05:46
You can use the jasperservers webservices (SOAP and REST is available) to get mange and run reports on from a web application. The SOAP wsdl is not compatible with asp.net c# (at least, I cannot get it to work), so I decided to use the REST webservice. I am ALMOST there, but I can't retrieve the report itself. does anyone know what goes wrong? I am using jasperserver CE 4.5 on Linux. // Setup WebClient WebClient httpclient = new WebClient(); //Basic Auth httpclient.Credentials = new NetworkCredential("NAME", "PASSWD"); httpclient.Headers.Add("Content-Type", "application/x-www-form-urlencoded")

C# variable length args, which is better and why: __arglist, params array or Dictionary<T,K>?

三世轮回 提交于 2019-11-30 04:22:11
问题 I recently read the following overflow post: Hidden Features of C# One of the features pointed out was the arglist. Why would one choose this or the alternatives as a means of using a variable length argument list to a method? Also, note that I would probably not use this kind of construct in my code unless a corner case warranted doing so. This is more of a question of semantics than whether it is even practical or prudent to even use variable length arguments. So does anyone know which is

Why shouldn't I always use nullable types in C#

拟墨画扇 提交于 2019-11-30 04:14:41
I've been searching for some good guidance on this since the concept was introduced in .net 2.0. Why would I ever want to use non-nullable data types in c#? (A better question is why wouldn't I choose nullable types by default, and only use non-nullable types when that explicitly makes sense.) Is there a 'significant' performance hit to choosing a nullable data type over its non-nullable peer? I much prefer to check my values against null instead of Guid.empty, string.empty, DateTime.MinValue,<= 0, etc, and to work with nullable types in general. And the only reason I don't choose nullable

sgml to xml conversion

孤街醉人 提交于 2019-11-29 23:44:54
问题 I have a following sample sgml data from my .sgm file and I want convert this in to xml <?dtd name="viewed"> <?XMLDOC> <viewed >xyz <cite> <yr>2010 <pno cite="2010 abc 1188">10 <?/XMLDOC> <?XMLDOC> <viewed>abc. <cite> <yr>2010 <pno cite="2010 xyz 5133">9 <?/XMLDOC> Output should be like this: <index1> <num viewed="xyz"/> <heading>xyz</heading> <index-refs> <link caseno="2010 abc 1188</link> </index-refs> </index-1> <index1> <num viewed="abc"/> <heading>abc</heading> <index-refs> <link caseno=

How to get the parameters passed to the asynchronous method in the callback

旧时模样 提交于 2019-11-29 18:04:48
I need a Label that is transmitted to the AsyncSendRegistrationMethod in CallbackMethodSendRegistration. private delegate ResponceFromServer AsyncSendRegistrationDelegate(RegistrationToUser registrationToUser, Label label); private ResponceFromServer AsyncSendRegistrationMethod(RegistrationToUser registrationToUser, Label label) { SetText(label, registrationToUser.Name + " registration..."); return Requests.DataBase.Authorization.Registration( registrationToUser.Name, registrationToUser.IdRoleUser, registrationToUser.IdGroup); } private void CallbackMethodSendRegistration(IAsyncResult ar) {

Is C# 4.0 backward compatible to C# 2.0?

ε祈祈猫儿з 提交于 2019-11-29 14:51:08
问题 May I know what is the difference between C# 4.0 and C# 2.0? Is C# 4.0 backward compatible to C# 2.0? Can I say that C# 4.0 is a superset of C# 2.0 (just like what C++ is to C)? Thanks. 回答1: C# 4.0 is nearly backwards compatible with previous versions but there are a few breaking changes. For most ordinary code you won't notice these breaking changes. For the new features in C# 4 you can check out the Wikipedia article which has quite a good summary with examples. The key points are: Dynamic

How to execute a .bat file from a C# windows form app?

主宰稳场 提交于 2019-11-29 13:16:38
What I need to do is have a C# 2005 GUI app call a .bat and several VBScript files at user's request. This is just a stop-gap solution until the end of the holidays and I can write it all in C#. I can get the VBScript files to execute with no problem but I am unable to execute the .bat file. When I "click" in the C# app to execute the .bat file a DOS window opens up and closes very fast and the test .bat file does not execute - "Windows does not recognize bat as an internal or external command" is the error returned in the DOS box. If I simply doubl-click the .bat file or manually run it from

Get hardware Info

寵の児 提交于 2019-11-29 11:23:47
How to get hardware information of a system using c# code? You can use the System.Management namespace for retrieving the hardware information of a machine using C#. Here's an article for retrieving hardware information in C# . And here's a list of WMI classes. 来源: https://stackoverflow.com/questions/908902/get-hardware-info