zachvaldez

asked on 3/22/2017

Unlocking a column in excel using C#

I have the Microsoft .Office.Interop.Excel installed but my question is
I want to unlock a column H. I do have data to reach H1..H500 but it could be less rows.
I want to unlock only until the last row with data. It should not affect more than the last row with data.
whats the code?

Last Comment

zachvaldez

8/22/2022 - Mon

Kyle Abrahams

3/22/2017

try the following:

Excel.Range all = app.get_Range("H:H", Type.Missing);
all.Locked = false;

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zachvaldez

3/22/2017

ASKER

I want to put gridlines in the column. Right now column is solid white with no gridlines. like the column look normal .
what is the code to do that in addition to above. THANKS!!!

Rgonzo1971

3/23/2017

Hi,

pls try

        xlRange = (Excel.Range)xlWorkSheet.get_Range(xlWorkSheet.Cells[1, 8] as Excel.Range, (xlWorkSheet.Cells[xlWorkSheet.Cells.Rows.Count, 8] as Excel.Range).get_End(Excel.XlDirection.xlUp));

        xlRange.Locked = false;
        xlRange.Cells.Borders.LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuou

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Kyle's code changes the whole column

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zachvaldez

3/23/2017

ASKER

Can Usedrange substitute on this or not? Does usedrange cover only to the last row of data or till the 65,000+
Last row?

Rgonzo1971

3/23/2017

It depends on the data and usedrange is not very reliable

zachvaldez

3/23/2017

ASKER

What if I want to change background color of "J1"? How to reference the cell?

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Rgonzo1971

3/23/2017

then try

Excel.Range xlRange= (Excel.Range) xlWorkSheet.Cells[1, 8];
xlRange.Interior.Color = Excel.XlRgbColor.rgbYellow;

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zachvaldez

3/23/2017

ASKER

Is column J 10?

Rgonzo1971

3/23/2017

then try
Excel.Range xlRange= (Excel.Range) xlWorkSheet.Cells[1, 10];
xlRange.Interior.Color = Excel.XlRgbColor.rgbYellow;

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zachvaldez

3/23/2017

ASKER

It's not changing the color. Originally it was yellow on J1. Can the formatting start on J2 ..down instead because J1 is a header with background yellow?

ASKER CERTIFIED SOLUTION

Rgonzo1971

3/23/2017

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zachvaldez

3/23/2017

ASKER

is "as" a C# keyword? just asking

zachvaldez

3/23/2017

ASKER

this code:
range = xlsWorkSheet.UsedRange.Columns[10, Type.Missing]; covers whole column including header. Can you modify this to start at J2 instead because J1 is header and has the original yellow background.
Maybe this is easier to understand for me.

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Rgonzo1971

3/23/2017

range = xlsWorkSheet.UsedRange.Columns[10, Type.Missing].Resize(xlsWorkSheet.UsedRange.Rows -1 , 1).Offset(1);

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zachvaldez

3/23/2017

ASKER

Excel.Range range4 = xlsWorkSheet.UsedRange.Columns[10, Type.Missing].Resize(xlsWorkSheet.UsedRange.Rows - 1, 1).Offset(1);

>>after the Resize, I have red underline on (xlsWorkSheet.UsedRange.Rows

getting this message ..(operator '-' cannot be applied to operands...)

Rgonzo1971

3/23/2017

replace with
xlsWorkSheet.UsedRange.Rows.Count

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zachvaldez

3/23/2017

ASKER

Bravo!