Alignment and string.Format

[tstephan]

In the docs for String.Format there is an alignment component which
allows you to pad the field to a certain number of spaces.

e.g.
FormatFName = String.Format("First Name = |{0,10}|", myFName);

Pads myFName, width of 10 minimum

I am used to printf which allows a '*' to be used to specify a
variable to be used at runtime to specify the width of the column.

e.g.
printf("%*s", iColWidth, myFName);
Pads myFName, width of iColWidth minimum

Am I missing something or did we lose that power in C#? I would hate
to have to build my format string at runtime just to do this.

[Tom Porterfield]

ts******@gmail.com wrote:

In the docs for String.Format there is an alignment component which
allows you to pad the field to a certain number of spaces.

e.g.
FormatFName = String.Format("First Name = |{0,10}|", myFName);

Pads myFName, width of 10 minimum

I am used to printf which allows a '*' to be used to specify a
variable to be used at runtime to specify the width of the column.

e.g.
printf("%*s", iColWidth, myFName);
Pads myFName, width of iColWidth minimum

Am I missing something or did we lose that power in C#? I would hate
to have to build my format string at runtime just to do this.

As far as I know, that's the only way. Ex:

string myFName = "tom";
int iColWidth = 10;
string FormatFName = string.Format(string.Format("First Name =
|{{0,{0}}}|", iColWidth), myFName);

--
Tom Porterfield

[tstephan]

On Aug 9, 3:38 pm, Tom Porterfield <[e-mail]:

[e-mail] wrote:

In the docs for String.Format there is an alignment component which
allows you to pad the field to a certain number of spaces.

e.g.
FormatFName = String.Format("First Name = |{0,10}|", myFName);

Pads myFName, width of 10 minimum

I am used to printf which allows a '*' to be used to specify a
variable to be used at runtime to specify the width of the column.

e.g.
printf("%*s", iColWidth, myFName);
Pads myFName, width of iColWidth minimum

Am I missing something or did we lose that power in C#? I would hate
to have to build my format string at runtime just to do this.

As far as I know, that's the only way. Ex:

string myFName = "tom";
int iColWidth = 10;
string FormatFName = string.Format(string.Format("First Name =
|{{0,{0}}}|", iColWidth), myFName);

--
Tom Porterfield

Thanks, that is exactly what I ended up doing - ugly code though. I
am surprised .NET lost functionality however - it would have been easy
to add this.