C # Filter specific strings

/**////<summary>
Detects if the input string strinput exists in the disabled string strconfigwords, and exists to filter the input value.
</summary>
public string Checkrepwords (String strconfigwords,string strinput)
{
Create an array of strwords to "|" The number is a separator.
string[] Strwords = Strconfigwords.split (new char[] {' | '});
This reads the cells in the array and detects whether the string exists in the defined filter phrase strconfigwords.
The format within the Strconfigwords line is: "Str1,str2", if str1 exists in the input strinput,
The str1 is replaced with the str2.
foreach (String Strword in Strwords)
{
string[] Strsplitword = Strword.split (new char[] {', '});
if (Strinput.indexof (strsplitword[0]) >=0)
{
Strinput = Strinput.replace (strsplitword[0],strsplitword[1]);
}
}
return strinput;
}