Mask single column in datatable in C#

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I have datatable to view in gridview. Now i need to mask 1st 6 digit of "AdminNumber" column content to "XXXXXX895".

DataTable Input:

AdminNumber Name
245637895 sham
124563789 Ram

I need Datatable output as:

AdminNumber Name
XXXXXX895 Sham
XXXXXX789 Ram

I have tried, but iam getting format the string option:

gridview.DataSource = dtSource;
     gridview.Columns[0].FormatString = "######";

Iam getting wrong output as

AdminNumber Name
XXXXXXXXX Sham
XXXXXXXXX Ram

What I have tried:

gridview.DataSource = dtSource;
     gridview.Columns[0].FormatString = "######";

Posted 1-Jun-18 3:02am

Vinodh Muthusamy

Updated 7-Jun-18 8:52am

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[no name] 1-Jun-18 11:43am

Maybe do this better in your SQL allready if possible?

2 solutions

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Gerry Schmitz · Answer 1 · 2018-06-01T06:23:00

Solution 1

Working with Computed Columns (C#) | Microsoft Docs[^]

Posted 1-Jun-18 6:23am

Gerry Schmitz

Comments

Maciej Los 7-Jun-18 14:33pm

5ed!

Maciej Los · Answer 2 · 2018-06-07T08:53:00

In addition to solution#1 by Gerry Schmitz[^], i'd like to provide C# example, how to create masked column ;)

C#

dt.Columns.Add("MaskedNumber", typeof(string));
dt.Columns["MaskedNumber"].Expression = "'XXX-XX-'+SUBSTRING(CONVERT(Number, System.String),6,4)";

result:

Number    FName  LastName MaskedNumber
781637895 sham   C        XXX-XX-7895 
558563789 Ram    M        XXX-XX-3789

Finally, you have to hide DataGridView's column[0] ;)