This month (2003-02) C # version of the FAQ

Q: How to easily and quickly convert character arrays to strings? <br>
Answer: char[] ar;<br>
String s = new String (AR);<br>
<br>
Q: What do I do if I want to traverse a control (such as DateTimePicker) in a form? <br>
A: foreach (Control C. Controls) <br>
{<br>
if (c is DateTimePicker) <br>
{<br>
Your code <br>
MessageBox.Show (((DateTimePicker) c). Name);<br>
}<br>
}<br>
<br>
Q: I want to learn C #, do you have a good book to recommend? <br>
Answer: (a) C # advanced Programming <br>
(b) Look at the. NET SDK, which is better than any book!<br>
<br>
Q: How to determine in C # that the string does not contain full-width characters <br>
A: Determine if ASCII is greater than 255 if greater is the full-width character <br>
<br>
Q: Must the DataSource of the DataGrid be a dataset? You can manipulate the DataGrid yourself rather than through data binding <br>
Answer: Assignment <br>
dgexample[rownum, Colnum] = "AAAA";<br>
Take value <br>
String cellvalue = dgexample[rownum, Colnum]. ToString () <br>
Actually manipulating the DataGrid is the datatable<br> that operates its corresponding data source.
You build a DataTable yourself, then you can manipulate column and row, and finally bind to Datagird <br>
<br>
Q: How do I get the total number of rows in the DataTable that are not equal to delete DataRowState? <br>
Answer:mytable.dataview.rowstatefilter=dataviewrowstate.deleted;<br>
int undeleterowcount=mytable.rows.count-mytable.dataview.count<br>
<br>
Q: How does C # Create irregular forms <br>
A: You can use the form.region to achieve <br>
Http://www.codeproject.com/csharp/shapedform.asp<br>
<br>
Q: How can I tell if today is the first day of the week? <br>
Answer: DateTime.Now.DayOfWeek.GetHashCode () <br>
or int intdayofweek= (int) datetime.now.dayofweek;<br>
<br>
Q: How do I get the ASCII code for a character in a string? <br>
A: int a= ' a '; can get the ASCII code of a <br>
<br>
Q: How to screen WinForm drag-and-drop function <br>
A: Change the FormBorderStyle for fixedsingle<br>
<br>
< The answer is wrong please point out >