关于使用csharp替换文件中的文本 [英] Regardingg replacing the text in file using csharp

问题描述

你好

我有一个文本文件，里面有一些单词或行.

我想通过在文本框中输入来搜索该文件中的特定单词

之后，我想用在文本框中输入的另一个单词替换该特定单词，然后单击按钮，它将在文本文件中替换该单词.

我已经完成了只搜索一行中的特定单词的工作，我无法为下一行进行搜索，并且我使用了替换功能，但它替代了文本文件中的整行而不是特定单词.


我正在WINDOWS FORMS中的CSharp中执行此操作.

hello

i have one text file which have some words or lines in it.

i want to search a paricular word in that file by entering in the textbox

After that i want to replace that particular word with another word entered in the textbox and by button click it should replace that word in the text file.

i have done for searching particular word in one line only i am not able to do serach for next line and also i used replace function but it is replacing entire lines in the text file instead of particular word.


i am doing this in CSharp in WINDOWS FORMS.

推荐答案

您可以尝试以下操作:

You can try this:

//Read a file as text:
string AllText = System.IO.File.ReadAllText(@"c:\temp\test1.txt");

string oldWord = "asd";
int oldWidth = oldWord.Length;
string newWord = "1234";
int i = AllText.IndexOf(oldWord);

while (i > -1)
{
    AllText = AllText.Substring(0, i) + newWord + AllText.Substring(i + oldWidth);
    i = AllText.IndexOf(oldWord, i);
}
//Do something with the result
Console.WriteLine(AllText);

string AllText = System.IO.File.ReadAllText(@"c:\temp.txt");
StringBuilder str = new StringBuilder(AllText);
str.Replace("Old Values","New Values");
this.WriteToFile(@"c:\temp.txt",str.ToString());

private bool WriteToFile(string path, string content)
{
    if (!string.IsNullOrEmpty(path))
    {
        try
        {
            using (StreamWriter sw = new StreamWriter(path))
            {
                sw.WriteLine(content);
            }
            return true;
        }
        catch (Exception ex)
        {
            MessageBox.Show("Cant write in file...\n" + ex.Message, "Message", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            return false;
        }
    }
    return false;
}

尝试逐行将文件读取到字符串数组中，然后用在文本框中输入的单词替换该数组中的所有字符串.

Trying reading your file into a string array line by line and then replace all strings in this array with the word you have entered in your text box.

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