I attempted to transfer a string value from a child window to the text box in an open window. The specific value is:
string fileName = @"C:\aaa.txt";
After sending the above value to the parent window, the backslash \ disappears automatically, resulting in fileName containing the value C:aaa.txt
What could be causing this problem?
What is the cause of this problem?
The "\" character serves as an escape character in JavaScript. It is used to pass the fileName from the child window to the parent window.
By using the backslash escape character, special characters can be turned into string characters.
Code Outputs
\' single quote
\" double quote
\\ backslash
\n new line
\r carriage return
\t tab
\b backspace
\f form feed
An example below shows how the escape character is used on variable x. See the JSFiddle demo for more details.
<script>
var x = 'C\:aaa';
alert(x);
</script>
To avoid this issue, use double slashes "\\" to escape the single backslash.
string fileName = @"C:\\aaa.txt";
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