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I want to replace Dash with a period only once in a string like

ABC-XYZ =ABC.XYZ

ABCXYZ =ABCXYZ (No Replace)

ABC-X-Y-Z =ABC.X-Y-Z

A-BC-XYZ =A.BC-XYZ

ABCXYZ- =ABCXYZ.

I found where the first dash is match using of IndexOF property of string.
And RegEx.Replace replace all the found characters I want to replace only first occurrence.
But how I can replace only once...?

Regards
Pankaj Joshi

If you want to shape your dreams into reality, please wake-up...

write your own function, use loop, if character found then replace and then break or return.

string str = "ABC-X-Y-Z";
int index = str.IndexOf("-");
str = String.Format("{0}{1}{2}", str.Substring(0, index), ".", str.Substring(index + 1, str.Length - index - 1));

Hope it helps.

I will use Google before asking dumb questions

Thanks for your reply.

But it will give error in case of

string str = "";

Because this input is depend upon the end user So I can-not say the input data in Correct format.

Or if dash is not found then it will also give the error.

I make new code please let me know this is Ok or not...?
**************************************************************
public static string getNewItemName(string actualItemName, string saparaterCharacter)
{
string valueToReturn = "";
try
{
int ipos = actualItemName.ToString().IndexOf(saparaterCharacter.ToString());
if (ipos > -1) //That means saparator is not found...
{
if (saparaterCharacter.ToString().Length == 0)
valueToReturn = actualItemName.ToString();
else
{
string strFirstPart = actualItemName.ToString().Substring(0, ipos).ToString();
string strSecondPart = "";
if (actualItemName.ToString().Length == 0)
strSecondPart = actualItemName.ToString().Substring(ipos).ToString();
else
strSecondPart = actualItemName.ToString().Substring(ipos + 1).ToString();

valueToReturn = strFirstPart + ":" + strSecondPart;
}
}
else
valueToReturn = actualItemName.ToString();
}
catch (Exception)
{
//In Case of any error we are returning the same name
valueToReturn = actualItemName.ToString();
}
return valueToReturn;
}
**************************************************************

Regards
Pankaj Joshi

If you want to shape your dreams into reality, please wake-up...

Hi,
u can try this.

  string str= "xyz-x-y-z";<br />
        int i = str.IndexOf("-");<br />
        str = str.Insert(i+1, ".").Remove(i, 1);<br />
<br />

Thanks,
Sun Rays

To get something you must have to try once.

My Articles

Thanks for your reply.

But it will give error in case of

string str = "";

Because this input is depend upon the end user So I can-not say the input data in Correct format.

Or if dash is not found then it will also give the error.

I make new code please let me know this is Ok or not...?
**************************************************************
public static string getNewItemName(string actualItemName, string saparaterCharacter)
{
string valueToReturn = "";
try
{
int ipos = actualItemName.ToString().IndexOf(saparaterCharacter.ToString());
if (ipos > -1) //That means saparator is not found...
{
if (saparaterCharacter.ToString().Length == 0)
valueToReturn = actualItemName.ToString();
else
{
string strFirstPart = actualItemName.ToString().Substring(0, ipos).ToString();
string strSecondPart = "";
if (actualItemName.ToString().Length == 0)
strSecondPart = actualItemName.ToString().Substring(ipos).ToString();
else
strSecondPart = actualItemName.ToString().Substring(ipos + 1).ToString();

valueToReturn = strFirstPart + ":" + strSecondPart;
}
}
else
valueToReturn = actualItemName.ToString();
}
catch (Exception)
{
//In Case of any error we are returning the same name
valueToReturn = actualItemName.ToString();
}
return valueToReturn;
}
**************************************************************

Regards
Pankaj Joshi

If you want to shape your dreams into reality, please wake-up...

Pankaj - Joshi wrote:
public static string getNewItemName(string actualItemName, string saparaterCharacter)
{
string valueToReturn = "";
try
{
int ipos = actualItemName.ToString().IndexOf(saparaterCharacter.ToString());
if (ipos > -1) //That means saparator is not found...
{
if (saparaterCharacter.ToString().Length == 0)
valueToReturn = actualItemName.ToString();
else
{
string strFirstPart = actualItemName.ToString().Substring(0, ipos).ToString();
string strSecondPart = "";
if (actualItemName.ToString().Length == 0)
strSecondPart = actualItemName.ToString().Substring(ipos).ToString();
else
strSecondPart = actualItemName.ToString().Substring(ipos + 1).ToString();

valueToReturn = strFirstPart + ":" + strSecondPart;
}
}
else
valueToReturn = actualItemName.ToString();
}
catch (Exception)
{
//In Case of any error we are returning the same name
valueToReturn = actualItemName.ToString();
}
return valueToReturn;
}

Hi,
here before checking anything you have to check that
if(str.Length > 0)
{
if(str.Contains("-"))
{
// here write everything.. will not give any error.
}

}

Thanks,
Sun Rays

To get something you must have to try once.

My Articles

Hi.
I hope this work for you.
Write this in your some click events.

string xNew="";
int j = 1;
for (int i = 0; i < TextBox1.Text.Length; i++)
{
string x = TextBox1.Text.Substring(i, 1);
if (x == "-")
{
if (j == 1)
{
xNew = xNew + ".";
j++;
}
else
{
xNew = xNew + x;
}
}
else {
xNew = xNew + x;
}
}
Label1.Text = xNew;
Small Logic.
Thank you.

"Good Thing Goes With Good People..."

Hi.
I hope this will help you out..
Write somewhere in button event and test it....
string xNew="";
int j = 1;
for (int i = 0; i < TextBox1.Text.Length; i++)
{
string x = TextBox1.Text.Substring(i, 1);
if (x == "-")
{
if (j == 1)
{
xNew = xNew + ".";
j++;
}
else
{
xNew = xNew + x;
}
}
else {
xNew = xNew + x;
}
}
Label1.Text = xNew;
Thanks for watching it....

"Good Thing Goes With Good People..."

Hi,

Will Help you lot..... sure

string xNew="";
int j = 1;
for (int i = 0; i < TextBox1.Text.Length; i++)
{
string x = TextBox1.Text.Substring(i, 1);
if (x == "-")
{
if (j == 1)
{
xNew = xNew + ".";
j++;
}
else
{
xNew = xNew + x;
}
}
else {
xNew = xNew + x;
}
}
Label1.Text = xNew;

"Good Thing Goes With Good People..."

Hi.
//Hope this will help you to a Lot for sure.....
string xNew="";
int j = 1;
for (int i = 0; i < TextBox1.Text.Length; i++)
{
string x = TextBox1.Text.Substring(i, 1);
if (x == "-")
{
if (j == 1)
{
xNew = xNew + ".";
j++;
}
else
{
xNew = xNew + x;
}
}
else {
xNew = xNew + x;
}
}
Label1.Text = xNew;
}

"Good Thing Goes With Good People..."

string str = "ABC-X-Y-Z";
int index = str.IndexOf("-");
if (index>=0) str = str.Substring(0,index)+ "." + str.Substring(index+1);

Luc Pattyn [Forum Guidelines] [My Articles]

this months tips:
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use PRE tags to preserve formatting when showing multi-line code snippets

Yet another way:

C#

if ( args.Length > 2 )
{
    int index = args [ 0 ].IndexOf ( args [ 1 ] ) ;
 
    if ( index >= 0 )
    {
        args [ 0 ] = (new System.Text.StringBuilder ( args [ 0 ] )).Replace ( args [ 1 ] , args [ 2 ] , index , args [ 1 ].Length ).ToString() ;
    }
 
    System.Console.WriteLine ( args [ 0 ] ) ;
}

How about this? Thanks for the opportunity.

C#

public static string
Replace
(
    string Subject
,
    string Old
,
    string New
,
    ushort MaxReplacements
)
{
    System.Text.StringBuilder result = new System.Text.StringBuilder ( Subject.Length ) ;
    string[] parts = Subject.Split
    (
        new string[] { Old }
    ,
        (int) MaxReplacements+1
    ,
        System.StringSplitOptions.None
    ) ;

    result.Append ( parts [ 0 ] ) ;

    for ( int runner = 1 ; runner < parts.Length ; runner++ )
    {
        result.Append ( New ) ;
        result.Append ( parts [ runner ] ) ;
    }

    return ( result.ToString() ) ;
}

-- modified at 9:38 Wednesday 28th November, 2007

Dagnabit! I keep forgetting about string.Join!

C#

public static string
Replace
(
    string Subject     
,
    string Old  
,
    string New      
,
    ushort MaxReplacements
)
{
    return ( string.Join 
    ( 
        New 
    ,
        Subject.Split 
        ( 
            new string[] { Old } 
        , 
            (int) MaxReplacements+1 
        , 
            System.StringSplitOptions.None 
        ) 
    ) ) ;
}

Hi,
I have a textbox which get a number(Amount of money) from user.
i want to show the enterd number like this : 0,000,000(1,123,145)(automatically add (,) after 3digits enterd)
when i use masking it doesn't work the way i want it ,
can any one help me on this?

Winform or webform?

In winform, you can use MaskedEdit standard control.. In web form, you have to find the custom control (e.g. http://www.codeproject.com/useritems/MaskingText_for_ASPNET.asp)