C＃添加從文本文件行到一個列表框

Question

我有一個包含文本行的文本文件，我想一定行添加到一個列表框，如果下一行滿足例如條件

如果行以＃開頭，則添加該行如果下一行與@開始後，所有的行與@

#add this line 
@add this line 
@add this line 
@add this line 
#dont add because the next line is not a @ 
#dont add because the next line is not a @ 
#dont add because the next line is not a @ 
#dont add because the next line is not a @ 
#add this line 
@add this line 
@add this line 
#dont add because the next line is not a @ 
#add this line 
@add this line 
#add this line 
@add this line 

希望啓動，這使得現場的任何幫助將是巨大

Answer 1

使用字符串的StartsWith方法http://msdn.microsoft.com/en-us/library/system.string.startswith.aspx

整個的功能就會像

var lines = File.ReadAllLines(yourpath); 
var resultLines = new List<string>(); 
bool adding = false; 
for(int i=0;i<lines.Length;i++) 
{ 
    var line = lines[i]; 
    if((line.StartsWith("#") && i < lines.Length-1 && lines[i+1].StartsWith("@")) 
     || adding && line.StartsWith("@")) 
     adding = true; 
    else if(i < lines.Length-1 && !lines[i+1].StartsWith("@")) 
     adding = false; 
    if(adding) 
     resultLines.Add(line); 
}