Graphics.Measur eString too short

[Rainer Queck]

Hello NG,

I am trying to adjust the column width of a DataGridView to the Text in its
column header.
To do this I am using the Graphics.Measur eString method. Unfortunatly I
alway get a too short string width.
What is it I am doing wrong?

Here the code I am using:
private void MinimizeDgvColu mns(DataGridVie w dgv)
{
using (Graphics g = dgv.CreateGraph ics())
{
foreach (DataGridViewCo lumn c in dgv.Columns)
{
string s = c.HeaderCell.Va lue.ToString();
c.Width = (int)graphics.M easureString(s,
dgv.ColumnHeade rsDefaultCellSt yle.Font).Width ;
}
}
}

Regards
Rainer Queck

[=?Utf-8?B?TW9ydGVuIFdlbm5ldmlrIFtDIyBNVlBd?=]

"Rainer Queck" wrote:

Hello NG,

I am trying to adjust the column width of a DataGridView to the Text in its
column header.
To do this I am using the Graphics.Measur eString method. Unfortunatly I
alway get a too short string width.
What is it I am doing wrong?

Here the code I am using:
private void MinimizeDgvColu mns(DataGridVie w dgv)
{
using (Graphics g = dgv.CreateGraph ics())
{
foreach (DataGridViewCo lumn c in dgv.Columns)
{
string s = c.HeaderCell.Va lue.ToString();
c.Width = (int)graphics.M easureString(s,
dgv.ColumnHeade rsDefaultCellSt yle.Font).Width ;
}
}
}

Regards
Rainer Queck

Hi Rainer,

Graphics.Measur eString is a quick way to measure a string, but the resulting
size is only an approximate measure. Use Graphics.Measur eCharacterRange s()
or TextRenderer.Me asureText(). PS! I believe MeasureText pads the size by
default so use TextFormatFlags .NoPadding if this is an issue.
MeasureCharacte rRanges is the most complex of the three measuring solutions,
but may give the best result.

--
Happy Coding!
Morten Wennevik [C# MVP]

[Rainer Queck]

Hello Morten,

thanks for your advices. I will give it a try.

Regards
Rainer

"Morten Wennevik [C# MVP]" <Mo************ @hotmail.comsch rieb im
Newsbeitrag news:28******** *************** ***********@mic rosoft.com...

>
"Rainer Queck" wrote:

>Hello NG,

I am trying to adjust the column width of a DataGridView to the Text in
its
column header.
To do this I am using the Graphics.Measur eString method. Unfortunatly I
alway get a too short string width.
What is it I am doing wrong?

Here the code I am using:
private void MinimizeDgvColu mns(DataGridVie w dgv)
{
using (Graphics g = dgv.CreateGraph ics())
{
foreach (DataGridViewCo lumn c in dgv.Columns)
{
string s = c.HeaderCell.Va lue.ToString();
c.Width = (int)graphics.M easureString(s,
dgv.ColumnHead ersDefaultCellS tyle.Font).Widt h;
}
}
}

Regards
Rainer Queck

Hi Rainer,

Graphics.Measur eString is a quick way to measure a string, but the
resulting
size is only an approximate measure. Use
Graphics.Measur eCharacterRange s()
or TextRenderer.Me asureText(). PS! I believe MeasureText pads the size by
default so use TextFormatFlags .NoPadding if this is an issue.
MeasureCharacte rRanges is the most complex of the three measuring
solutions,
but may give the best result.

--
Happy Coding!
Morten Wennevik [C# MVP]

[Rainer Queck]

Hello Morten,

unfortunately you suggestions did not work. I still endup in having even
shorter "widths".
Currently I get the best result with Graphics.Measur eString and handing
over a string which is enlarged by "__" (two underscore).

This is a workaround and I would like to know how to do it right.

Regards
Rainer

"Morten Wennevik [C# MVP]" <Mo************ @hotmail.comsch rieb im
Newsbeitrag news:28******** *************** ***********@mic rosoft.com...

>
"Rainer Queck" wrote:

>Hello NG,

I am trying to adjust the column width of a DataGridView to the Text in
its
column header.
To do this I am using the Graphics.Measur eString method. Unfortunatly I
alway get a too short string width.
What is it I am doing wrong?

Here the code I am using:
private void MinimizeDgvColu mns(DataGridVie w dgv)
{
using (Graphics g = dgv.CreateGraph ics())
{
foreach (DataGridViewCo lumn c in dgv.Columns)
{
string s = c.HeaderCell.Va lue.ToString();
c.Width = (int)graphics.M easureString(s,
dgv.ColumnHead ersDefaultCellS tyle.Font).Widt h;
}
}
}

Regards
Rainer Queck

Hi Rainer,

Graphics.Measur eString is a quick way to measure a string, but the
resulting
size is only an approximate measure. Use
Graphics.Measur eCharacterRange s()
or TextRenderer.Me asureText(). PS! I believe MeasureText pads the size by
default so use TextFormatFlags .NoPadding if this is an issue.
MeasureCharacte rRanges is the most complex of the three measuring
solutions,
but may give the best result.

--
Happy Coding!
Morten Wennevik [C# MVP]

[Ben Voigt [C++ MVP]]

Rainer Queck wrote:

Hello Morten,

unfortunately you suggestions did not work. I still endup in having
even shorter "widths".
Currently I get the best result with Graphics.Measur eString and
handing over a string which is enlarged by "__" (two underscore).

This is a workaround and I would like to know how to do it right.

You are setting the column width, but there is some margin so that the
columns don't run together, as a result the column content is allowed less
space than the column width. You'll have to add that margin to the content
width to get the required column width.

>
Regards
Rainer

"Morten Wennevik [C# MVP]" <Mo************ @hotmail.comsch rieb im
Newsbeitrag news:28******** *************** ***********@mic rosoft.com...

>>
"Rainer Queck" wrote:

>>Hello NG,

I am trying to adjust the column width of a DataGridView to the
Text in its
column header.
To do this I am using the Graphics.Measur eString method.
Unfortunatl y I alway get a too short string width.
What is it I am doing wrong?

Here the code I am using:
private void MinimizeDgvColu mns(DataGridVie w dgv)
{
using (Graphics g = dgv.CreateGraph ics())
{
foreach (DataGridViewCo lumn c in dgv.Columns)
{
string s = c.HeaderCell.Va lue.ToString();
c.Width = (int)graphics.M easureString(s,
dgv.ColumnHea dersDefaultCell Style.Font).Wid th;
}
}
}

Regards
Rainer Queck

Hi Rainer,

Graphics.Measu reString is a quick way to measure a string, but the
resulting
size is only an approximate measure. Use
Graphics.Measu reCharacterRang es()
or TextRenderer.Me asureText(). PS! I believe MeasureText pads the
size by default so use TextFormatFlags .NoPadding if this is an issue.
MeasureCharact erRanges is the most complex of the three measuring
solutions,
but may give the best result.

--
Happy Coding!
Morten Wennevik [C# MVP]

[Rune Huseby]

"Rainer Queck" <Ra****@noemail .noemailwrote in
news:u9******** ******@TK2MSFTN GP04.phx.gbl:

Hello NG,

I am trying to adjust the column width of a DataGridView to the Text
in its column header.
To do this I am using the Graphics.Measur eString method. Unfortunatly
I alway get a too short string width.
What is it I am doing wrong?

Here the code I am using:
private void MinimizeDgvColu mns(DataGridVie w dgv)
{
using (Graphics g = dgv.CreateGraph ics())
{
foreach (DataGridViewCo lumn c in dgv.Columns)
{
string s = c.HeaderCell.Va lue.ToString();
c.Width = (int)graphics.M easureString(s,
dgv.ColumnHeade rsDefaultCellSt yle.Font).Width ;
}
}
}

You need to have space for the gridlines to, and some margin.

This is how the text-box-columns calculate its preferred size:
protected internal override Size GetPreferredSiz e(Graphics g, object value)
{
Size extents = Size.Ceiling(g. MeasureString(G etText(value),
DataGridTableSt yle.DataGrid.Fo nt));
extents.Width += xMargin*2 + this.DataGridTa bleStyle.GridLi neWidth;
extents.Height += yMargin;
return extents;
}
hint: The .NET source-code can be downloaded using this tool:
http://www.codeplex.com/NetMassDownloader

--
Rune Huseby

[Michael F. Sargent]

MeasureString has some usable overloads that may help you. For example, I use:

SizeF tabSize = graphics.Measur eString( "M", font, rectfText.Size, StringFormat.Ge nericTypographi c );

This overload is described in http://msdn.microsoft.com/en-us/library/ms142109.aspx
The note under Remarks is of interest:

The MeasureString method is designed for use with individual strings and includes a small amount of extra space before and after the
string to allow for overhanging glyphs. Also, the DrawString method adjusts glyph points to optimize display quality and might
display a string narrower than reported by MeasureString. To obtain metrics suitable for adjacent strings in layout (for example,
when implementing formatted text), use the MeasureCharacte rRanges method or one of the MeasureString methods that takes a
StringFormat, and pass GenericTypograp hic. Also, ensure the TextRenderingHi nt for the Graphics is AntiAlias.

Hope this helps,
Mike

"Rune Huseby" <ru**@pronto.tv wrote in message news:Xn******** *************** ***********@207 .46.248.16...

"Rainer Queck" <Ra****@noemail .noemailwrote in
news:u9******** ******@TK2MSFTN GP04.phx.gbl:

>Hello NG,

I am trying to adjust the column width of a DataGridView to the Text
in its column header.
To do this I am using the Graphics.Measur eString method. Unfortunatly
I alway get a too short string width.
What is it I am doing wrong?

Here the code I am using:
private void MinimizeDgvColu mns(DataGridVie w dgv)
{
using (Graphics g = dgv.CreateGraph ics())
{
foreach (DataGridViewCo lumn c in dgv.Columns)
{
string s = c.HeaderCell.Va lue.ToString();
c.Width = (int)graphics.M easureString(s,
dgv.ColumnHead ersDefaultCellS tyle.Font).Widt h;
}
}
}

You need to have space for the gridlines to, and some margin.

This is how the text-box-columns calculate its preferred size:
protected internal override Size GetPreferredSiz e(Graphics g, object value)
{
Size extents = Size.Ceiling(g. MeasureString(G etText(value),
DataGridTableSt yle.DataGrid.Fo nt));
extents.Width += xMargin*2 + this.DataGridTa bleStyle.GridLi neWidth;
extents.Height += yMargin;
return extents;
}
hint: The .NET source-code can be downloaded using this tool:
http://www.codeplex.com/NetMassDownloader

--
Rune Huseby