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Possible Duplicate:
Removing all spaces in a string
你好,
// Input string
string st = " This is an example string. ";
// Call Trim instance method.
// This returns a new string copy.
st = st.Trim();
// output
"This is an example string."
我怎样才能输出
"Thisisanexamplestring."
我想删除整个句子之间的所有空格。谢谢。