C# textbox data

Question

here is data in 5 line textbox
string log = "Date Time Port Conc. Height Area Ln_Area F_Area F_Ratio Peak Stand Begin P_cur End E_Cur \r\n"

• "02 / 10 / 2020 06:50:48 Dn 10.8 ppb 516 3129.6 1099.0 1.0920 0.01803 97.9 28650 89.7 28146 107.3 28674 \r\n"
• "02 / 10 / 2020 06:55:45 Dn 10.5 ppb 509 3040.0 1067.3 1.0606 0.01779 97.8 28652 90.3 28156 105.4 28676 \r\n"
• "02 / 10 / 2020 07:01:43 Dn 11.1 ppb 542 3218.2 1130.1 1.1227 0.01893 97.9 28656 90.0 28127 105.8 28678 \r\n"
• "02 / 10 / 2020 06:50:48 Dn 10.8 ppb 516 3129.6 1099.0 1.0920 0.01803 97.9 28650 89.7 28146 107.3 28674 \r\n"
• "02 / 10 / 2020 06:55:45 Dn 10.5 ppb 509 3040.0 1067.3 1.0606 0.01779 97.8 28652 90.3 28156 105.4 28676 \r\n"
• "02 / 10 / 2020 07:01:43 Dn 11.1 ppb 542 3218.2 1130.1 1.1227 0.01893 97.9 28656 90.0 28127 105.8 28678 \r\n"
• "02 / 10 / 2020 06:50:48 Dn 10.8 ppb 516 3129.6 1099.0 1.0920 0.01803 97.9 28650 89.7 28146 107.3 28674 \r\n"
• "02 / 10 / 2020 06:55:45 Dn 10.5 ppb 509 3040.0 1067.3 1.0606 0.01779 97.8 28652 90.3 28156 105.4 28676 \r\n"
• "02 / 10 / 2020 07:01:43 Dn 11.1 ppb 542 3218.2 1130.1 1.1227 0.01893 97.9 28656 90.0 28127 105.8 28678 \r\n"
• "02 / 10 / 2020 06:50:48 Dn 10.8 ppb 516 3129.6 1099.0 1.0920 0.01803 97.9 28650 89.7 28146 107.3 28674 \r\n"
• "02 / 10 / 2020 06:55:45 Dn 10.5 ppb 509 3040.0 1067.3 1.0606 0.01779 97.8 28652 90.3 28156 105.4 28676 \r\n"
• "02 / 10 / 2020 07:01:43 Dn 11.1 ppb 542 3218.2 1130.1 1.1227 0.01893 97.9 28656 90.0 28127 105.8 28678 \r\n";
  I want to be able to scroll down with first line staying,
  so you know what data means.
  How can this be done

Answer 1

It can be done with EM_SETRECT, splitting header + data and drawing header in WM_PAINT,
but the formatting of your header + colums is bad (not same size)
I just added space to the date/time column with a GenericMonospace font, but other columns cannot be aligned with this format (titles width > data width)

Answer 2

If you want to display one row at a time and switch through the scroll wheel, then combobox should be closer to your needs.

The problem is that the combobox cannot keep the first line.

But since the title is unchanged, you can put a label on it, or you can rewrite the combobox to make it display multiple lines.

Multiline combobox dropdown list

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Answer 3

Looks to me like you are trying to display somewhat tabular data ... realistically, you will need to parse out the content in the string "log" to separate the headers from the content. Then at that point you can create a layout that leaves the first line content steady while letting you scroll the bottom content below it.

That being said, you've not indicated whether this is a web application you're working on, or uwp, etc. so any additional implementation details would vary obviously.