Delphi的StringReplace 字符串替换函数的使用

Delphi的StringReplace 字符串替换函数

function StringReplace (const S, OldPattern, NewPattern: string; Flags: TReplaceFlags): string;

rfReplaceAll：全部替换

rfIgnoreCase：忽略大小写

For Example：

var

aStr: String;

begin

aStr := 'This is a book, not a pen!';

ShowMessage(StringReplace (aStr, 'a', 'two', []));//This is two book, not a pen!只替换了第一个符合的字

ShowMessage(StringReplace (aStr, 'a', 'two', [rfReplaceAll]));//This is two book, not two pen!替换了所有符合的字

aStr := 'This is a book, not A pen!';

ShowMessage(StringReplace (aStr, 'a', 'two', [rfReplaceAll]));//This is two book, not A pen!只替换了符合的字(小写a)

ShowMessage(StringReplace (aStr, 'a', 'two', [rfReplaceAll, rfIgnoreCase]));//This is two book, not two pen!不管大小写替换了所有符合的字

end;

如何读取dbgrid的第i行数据？

query1.close;

query1.sql.text:='select * from yourtable';

query1.open;

dbgrid的总行数就是

query1.recordcount

dbgrid1.Columns.Grid.Fields[7].Value

这个是选中列第八行的值