Data is chaning from Upper case to lower case while doing Find and Replace

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Hi All,

I'm working on FIND and REPLACE functionality in datagridview.

Below is the result after working on it.

S.No
-----
CODE0001
CODE0002
CODE0003
CODE0004

Where S.No is column name.

When i FIND 0001 and ask to replace that with 1000, the result is,

S.No
-----
code1000
CODE0002
CODE0003
CODE0004

Find and Replace functionality is working but the text from UPPERCASE is changing to LOWERCASE.

[edit]
Code for Find and Replace:

C#

for (int i = 0; i &amp;lt;= dataGridView1.Rows.Count - 1; i++)
{
    if (dataGridView1.Rows[i].Cells[f.cmbColumnCombo.Text].Value.ToString().ToLower().Contains(f.txtfind.Text.ToLower()))
    {
        dataGridView1.Rows[i].Cells[f.cmbColumnCombo.Text].Value = dataGridView1.Rows[i].Cells[f.cmbColumnCombo.Text].Value.ToString().ToLower().Replace(f.txtfind.Text.ToLower(), f.txtreplace.Text);
        bulidDataRow(i);
    }
}

Posted 5-Jan-16 23:02pm

Member 8010354

Updated 5-Jan-16 23:29pm

Richard MacCutchan

v3

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Comments

Richard MacCutchan 6-Jan-16 5:16am

Your code has a bug. However, without seeing the code no one can guess where.

Member 8010354 6-Jan-16 5:25am

Code moved to question

Richard MacCutchan 6-Jan-16 5:30am

You are converting the text ToLower!

Herman<T>.Instance 6-Jan-16 5:38am

Exactly. ToLower()

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OriginalGriff · Accepted Answer · 2016-01-05T23:40:00

Well yes...look at your code!

C#

... = ... .ToLower().Replace(f.txtfind.Text.ToLower(), f.txtreplace.Text);

You are lower casing your data before and during the Replace operation, so the result will always be lower case.

Consider using a Regex.Replace instead, which has a case insensitive version:
Regex.Replace Method (String, String, String, RegexOptions) (System.Text.RegularExpressions)[^]