Question : How to rewrite an IF statement in C# to ensure that an extract file has an output field with a fixed length of 10 and with leading zeros?

I am writing my first C# console application using Visual Studio 2005.
My goal is to have my application read an input file and create an extract file.
Do you know how I could rewrite the following C# code "IF statement" for 1 of my input fields?
2 examples of the input record value are as follows, for the input field titled image_offset:
1) <csc:image_offset>02894</csc:image_offset>
or
2) <csc:image_offset>0</csc:image_offset>

For the output of this field, the output field is titled "GROUP OFFSET"
The output field should be formatted with leading zeros and with a fixed field length of 10?
The output for the 1st example above should be as follows:
GROUP_OFFSET:0000002894 (6 leading zeros)
The output for the 2nd example should be as follows:
GROUP_OFFSET:0000000000 (10 zeros)

My C# IF statement which needs to be modified is as follows:

if (reader.Name == "csc:image_offset")
{
arr1[i,17] = "GROUP_OFFSET:" + reader.ReadElementContentAsString();
}

Here is an example of an input file for this application:
-------------------------------
<?xml version="1.0"?>
<csc:CIndex_File
xmlns:csc="http://c.com/xml/CIndex_File">
<csc:header>
<csc:version>1.0</csc:version>
<csc:customer_name> </csc:customer_name>
<csc:request_id>MD </csc:request_id>
<csc:creation_date>20100805</csc:creation_date>
<csc:creation_time>084027</csc:creation_time>
<csc:creation_host>hbd-chvcore</csc:creation_host>
<csc:content_type>CHECK</csc:content_type>
<csc:item_count>2</csc:item_count>
<csc:image_file_name>J.img</csc:image_file_name>
<csc:input_request_file></csc:input_request_file>
</csc:header>
<csc:item>
<csc:processing_date>20100805</csc:processing_date>
<csc:item_sequence_number>000000000000001</csc:item_sequence_number>
<csc:account_number>00000000000000000005 </csc:account_number>
<csc:check_number>000000000000001</csc:check_number>
<csc:amount>0000000100</csc:amount>
<csc:routing_transit>000000007</csc:routing_transit>
<csc:bank_number>0002</csc:bank_number>
<csc:transaction_code></csc:transaction_code>
<csc:data1></csc:data1>
<csc:data2></csc:data2>
<csc:data3></csc:data3>
<csc:userField></csc:userField>
<csc:image_offset>02894</csc:image_offset>
<csc:image_length>0000016685</csc:image_length>
<csc:image_side>A</csc:image_side>
</csc:item>
<csc:item>
<csc:processing_date>20100805</csc:processing_date>
<csc:item_sequence_number>000000000000002</csc:item_sequence_number>
<csc:account_number>00000000000000000005</csc:account_number>
<csc:check_number>000000000000002</csc:check_number>
<csc:amount>0000000200</csc:amount>
<csc:routing_transit>000000007</csc:routing_transit>
<csc:bank_number>0002</csc:bank_number>
<csc:transaction_code></csc:transaction_code>
<csc:data1></csc:data1>
<csc:data2></csc:data2>
<csc:data3></csc:data3>
<csc:userField></csc:userField>
<csc:image_offset>0</csc:image_offset>
<csc:image_length>0000016685</csc:image_length>
<csc:image_side>A</csc:image_side>
</csc:item>
</csc:CheckVision_Index_File>
-----------------------------------------------------
My program is as follows:

using System;
using System.Xml;
using System.IO;
namespace ReadXml1
{
class Class1
{
static void Main(string[] args)
{
int i = 0;
string[,] arr1 = new string[1000,19];
int iCheckNumber = 0;

XmlTextReader reader = new XmlTextReader("C:\\rbc.xml");

StreamWriter sw = new StreamWriter("C:\\output.txt");

while (reader.Read())

{
if (reader.NodeType == XmlNodeType.Element)
{
if (reader.Name == "csc:check_number")
{
iCheckNumber = iCheckNumber + 1;
arr1[i,0] = "COMMENT: CHECK NUMBER #" + iCheckNumber;
arr1[i,1] = "GROUP_FIELD_NAME:CheckNumber";
arr1[i,2] = "GROUP_FIELD_VALUE:" + reader.ReadElementContentAsString();
}
if (reader.Name == "csc:routing_transit")
{
arr1[i,3] = "GROUP_FIELD_NAME:RoutingTransit";
arr1[i,4] = "GROUP_FIELD_VALUE:" + reader.ReadElementContentAsString();
arr1[i,5] = "GROUP_FIELD_NAME:BankName";
arr1[i,6] = "GROUP_FIELD_VALUE:RBC BANK";
}
if (reader.Name == "csc:account_number")
{
arr1[i,7] = "GROUP_FIELD_NAME:BankAccountNo";
arr1[i,8] = "GROUP_FIELD_VALUE:" + reader.ReadElementContentAsString();
}
if (reader.Name == "csc:amount")
{
arr1[i,9] = "GROUP_FIELD_NAME:CheckAmount";
arr1[i,10] = "GROUP_FIELD_VALUE:" + reader.ReadElementContentAsString();
arr1[i,11] = "GROUP_FIELD_NAME:CpscNo";
arr1[i,12] = "GROUP_FIELD_VALUE:00000000";
}
if (reader.Name == "csc:processing_date")
{
arr1[i,13] = "GROUP_FIELD_NAME:CheckPaidDate";
arr1[i,14] = "GROUP_FIELD_VALUE:" + reader.ReadElementContentAsString();
arr1[i,15] = "GROUP_FIELD_NAME:OfficeNo";
arr1[i,16] = "GROUP_FIELD_VALUE:000";
}
if (reader.Name == "csc:image_offset")
{
arr1[i,17] = "GROUP_OFFSET:" + reader.ReadElementContentAsString();
}
if (reader.Name == "csc:image_length")
{
arr1[i,18] = "GROUP_LENGTH:" + reader.ReadElementContentAsString();
i++;
}
}
}

for (int iter = 0; iter < i; iter++)
{
for (int j = 0; j < 19; j++)
{
sw.WriteLine(arr1[iter,j]);
}
}
sw.Close();
reader.Close();
}
}
}

My output file would look like the following:

COMMENT: CHECK NUMBER #1
GROUP_FIELD_NAME:CheckNumber
GROUP_FIELD_VALUE:000000000000001
GROUP_FIELD_NAME:RoutingTransit
GROUP_FIELD_VALUE:000000007
GROUP_FIELD_NAME:BankName
GROUP_FIELD_VALUE:RBC BANK
GROUP_FIELD_NAME:BankAccountNo
GROUP_FIELD_VALUE:00000000000000000005
GROUP_FIELD_NAME:CheckAmount
GROUP_FIELD_VALUE:0000001.00
GROUP_FIELD_NAME:CpscNo
GROUP_FIELD_VALUE:00000000
GROUP_FIELD_NAME:CheckPaidDate
GROUP_FIELD_VALUE:20100805
GROUP_FIELD_NAME:OfficeNo
GROUP_FIELD_VALUE:000
GROUP_OFFSET:0000002894
GROUP_LENGTH:0000016685
COMMENT: CHECK NUMBER #2
GROUP_FIELD_NAME:CheckNumber
GROUP_FIELD_VALUE:000000000000002
GROUP_FIELD_NAME:RoutingTransit
GROUP_FIELD_VALUE:000000007
GROUP_FIELD_NAME:BankName
GROUP_FIELD_VALUE:RBC BANK
GROUP_FIELD_NAME:BankAccountNo
GROUP_FIELD_VALUE:00000000000000000005
GROUP_FIELD_NAME:CheckAmount
GROUP_FIELD_VALUE:0000002.00
GROUP_FIELD_NAME:CpscNo
GROUP_FIELD_VALUE:00000000
GROUP_FIELD_NAME:CheckPaidDate
GROUP_FIELD_VALUE:20100805
GROUP_FIELD_NAME:OfficeNo
GROUP_FIELD_VALUE:000
GROUP_OFFSET:0000000000
GROUP_LENGTH:0000016685

Answer : How to rewrite an IF statement in C# to ensure that an extract file has an output field with a fixed length of 10 and with leading zeros?

Or this may be better:

                       
                         if (reader.Name == "csc:image_offset")
            {
                string strTemp = reader.ReadElementContentAsString();
                arr1[i, 17] = "GROUP_OFFSET:" + strTemp.PadLeft(10,'0');
            }

Question : How to rewrite an IF statement in C# to ensure that an extract file has an output field with a fixed length of 10 and with leading zeros?

Answer : How to rewrite an IF statement in C# to ensure that an extract file has an output field with a fixed length of 10 and with leading zeros?

Or this may be better: 1: 2: 3: 4: 5: if (reader.Name == "csc:image_offset") { string strTemp = reader.ReadElementContentAsString(); arr1[i, 17] = "GROUP_OFFSET:" + strTemp.PadLeft(10,'0'); }

Or this may be better:

1: 2: 3: 4: 5:

if (reader.Name == "csc:image_offset") { string strTemp = reader.ReadElementContentAsString(); arr1[i, 17] = "GROUP_OFFSET:" + strTemp.PadLeft(10,'0'); }