Data Grid

Tony Coffman -

Grid Options

The Data Grids in VDM have many advanced features that allow you to work with your data. The Data Grid options are accessible through Right-Click Context menus at four distinct hot spots on the Grid. 

Grid Header

  • Full Expand: Expands/Shows the detail under the Grouped Columns
  • Full Collapse: Collapses/Hides the detail under the Grouped columns
  • Clear Grouping: Removes the Grid Level Grouping

 

Grid Column Header

  • Sort Ascending/Descending: Grid Level Sorting (does not affect the View’s Sort Criteria)
  • Group By This Column: Groups the Data Grid on the selected column
  • Hide Group By Box: Hides the area on the Data Grid labeled ‘Drag a column header here to…’
  • Remove This Column: Removes the selected column from the Data Grid but not the View
  • Column Chooser: Provides a list of Removed Columns so they can be added back to the View
  • Best Fit: Expands the selected Columns width to fit the data
  • Best Fit (all columns): Expands all Columns widths to fit the data
  • Filter Editor: Allows for Data Grid Level filtering (does not affect the View’s Filter Criteria).
  • Show Find Panel: Displays the Data Grid’s Find Panel
  • Show Auto Filter Row: Displays the Data Grid’s Auto Filter Row

 

  

Grid Body

Add Equal Speed Filter: Adds View Level Filter based on the selected item in the Data Grid

Add Not Equal Speed Filter: Adds View Level Filter based on the selected item in the Data Grid

Enable Drag Drop: Enables Drag and Drop Filter, Sort, Group and Summary based on the selected item

Enable Group Footer: Enables the Group Footer Summary Row when there are Grouped Columns

Create List: Creates a Text File listing of all the data in the Selected Column

Format Column: Displays Formatting Options for the Selected Column

Toggle: Expands the Data Grid to full size

Add Column: Allows for the insertion of an Unbound Expression Column

Edit Expression: Allows for the edit of an Unbound Expression Column

Data Type: Defines the data type for the Selected Column

 

Pivot Grid Body

Format Column: Displays Formatting Options for the Selected Column

Add Unbound Field: Allows for the insertion of an Unbound Expression Column

Edit Fields: Displays all unbound fields and allows for the modification of the fields

Use Summary Totals: Changes the pivot grid to use summarized data for calculations, not on an individual basis

Reload: Resets the Pivot Grid

Use Summary Datatable: Sets the data source for the Pivot Grid to use the summary instead of details

Hide Filter Bar: Hides the filter bar as well as any unused fields

Toggle: Expands the Data Grid to full size

 

Grid Footer

Sum: Summarizes the Selected Column

Min: Displays the Minimum Value for the Selected Column

Max: Displays the Maximum Value for the Selected Column

Count: Displays the Total Count for the Selected Column

Average: Displays the Average Value for the Selected Column

None: Removed the Summary for the Selected Column

 

Grid Usage

Column Grouping: To Group your data on a Column, Drag and Drop the Selected Column to the Data Grid Header.

Group Summaries: To add a Group Summary Right Click on the Group Summary bar and select the appropriate summary option.

Data Grid Summaries: To add a Data Grid Summary Right Click on the Data Grid’s Footer and select the appropriate summary option.

 

Grid Column Unbound Expressions

To add an Unbound Expression to a View’s Data Grid, Right Click on the Data Grid Body and select Add New Expression.

Build the Unbound Expression and Click OK.

The Unbound Expression will be displayed in the Data Grid and can be formatted like any other Column.

Operators

Operator

Description

Example

+

Adds the value of one numeric expression to another or concatenates two strings.

[UnitPrice] + 4 [FirstName] + ' ' + [LastName]

-

Finds the difference between two numbers.

[Price1] - [Price2]

*

Multiplies the value of two expressions.

[Quantity] * [UnitPrice] * (1 - [BonusAmount])

/

Divides the first operand by the second.

[Quantity] / 2

%

Returns the remainder (modulus) obtained by dividing one numeric expression into another.

[Quantity] % 3

|

Compares each bit of its first operand to the corresponding bit of its second operand. If either bit is 1, the corresponding result bit is set to 1. Otherwise, the corresponding result bit is set to 0.

[Flag1] | [Flag2]

&

Performs a bitwise logical AND operation between two integer values.

[Flag] & 10

^

Performs a logical exclusion on two Boolean expressions, or a bitwise exclusion on two numeric expressions.

[Flag1] ^ [Flag2]

==

Returns true if both operands have the same value; otherwise, it returns false.

[Quantity] == 10

!=

Returns true if the operands do not have the same value; otherwise, it returns false.

[Country] != 'France'

Less than operator. Used to compare expressions.

[UnitPrice] < 20

<=

Less than or equal to operator. Used to compare expressions.

[UnitPrice] <= 20

>=

Greater than or equal to operator. Used to compare expressions.

[UnitPrice] >= 30

Greater than operator. Used to compare expressions.

[UnitPrice] > 30

In (,,,)

Tests for the existence of a property in an object.

[Country] In ('USA', 'UK', 'Italy')

Like

Compares a string against a pattern. If the value of the string matches the pattern, then the result is true. If the string does not match the pattern, the result is false. If both string and pattern are empty strings, the result is true.

[Name] Like 'An%'

Between (,)

Specifies a range to test. Returns true if a value is greater than or equal to the first operand and less than or equal to the second operand.

[Quantity] Between (10, 20)

And

Performs a logical conjunction on two expressions.

[InStock] And ([ExtendedPrice]> 100)

Or

Performs a logical disjunction on two Boolean expressions.

[Country]=='USA' Or [Country]=='UK'

Not

Performs logical negation on an expression.

Not [InStock]

Functions

Date-time Functions

Function

Description

Example

AddDays(DateTime, DaysCount)

Returns a date-time value that is the specified number of days away from the specified DateTime.

AddDays([OrderDate], 30)

AddHours(DateTime, HoursCount)

Returns a date-time value that is the specified number of hours away from the specified DateTime.

AddHours([StartTime], 2)

AddMilliSeconds(DateTime, MilliSecondsCount)

Returns a date-time value that is the specified number of milliseconds away from the specified DateTime.

AddMilliSeconds(([StartTime], 5000))

AddMinutes(DateTime, MinutesCount)

Returns a date-time value that is the specified number of minutes away from the specified DateTime.

AddMinutes([StartTime], 30)

AddMonths(DateTime, MonthsCount)

Returns a date-time value that is the specified number of months away from the specified DateTime.

AddMonths([OrderDate], 1)

AddSeconds(DateTime, SecondsCount)

Returns a date-time value that is the specified number of seconds away from the specified DateTime.

AddSeconds([StartTime], 60)

AddTicks(DateTime, TicksCount)

Returns a date-time value that is the specified number of ticks away from the specified DateTime.

AddTicks([StartTime], 5000)

AddTimeSpan(DateTime, TimeSpan)

Returns a date-time value that is away from the specified DateTime for the given TimeSpan.

AddTimeSpan([StartTime], [Duration])

AddYears(DateTime, YearsCount)

Returns a date-time value that is the specified number of years away from the specieid DateTime.

AddYears([EndDate], -1)

GetDate(DateTime)

Extracts a date from the defined DateTime.

GetDate([OrderDateTime])

GetDay(DateTime)

Extracts a day from the defined DateTime.

GetDay([OrderDate])

GetDayOfWeek(DateTime)

Extracts a day of the week from the defined DateTime.

GetDayOfWeek([OrderDate])

GetDayOfYear(DateTime)

Extracts a day of the year from the defined DateTime.

GetDayOfYear([OrderDate])

GetHour(DateTime)

Extracts an hour from the defined DateTime.

GetHour([StartTime])

GetMilliSecond(DateTime)

Extracts milliseconds from the defined DateTime.

GetMilliSecond([StartTime])

GetMinute(DateTime)

Extracts minutes from the defined DateTime.

GetMinute([StartTime])

GetMonth(DateTime)

Extracts a month from the defined DateTime.

GetMonth([StartTime])

GetSecond(DateTime)

Extracts seconds from the defined DateTime.

GetSecond([StartTime])

GetTimeOfDay(DateTime)

Extracts the time of the day from the defined DateTime in ticks.

GetTimeOfDay([StartTime])

GetYear(DateTime)

Extracts a year from the defined DateTime.

GetYear([StartTime])

Now()

Returns the current system date and time.

AddDays(Now(), 5)

Today()

Returns the current date. Regardless of the actual time, this function returns midnight of the current date.

AddMonths(Today(), 1)

UtcNow()

Returns the current system date and time, expressed as Coordinated Universal Time (UTC).

AddDays(UtcNow(), 7)

Logical Functions

Function

Description

Example

Iif(Expression, TruePart, FalsePart)

Returns either TruePart or FalsePart, depending on the evaluation of the Boolean Expression.

Iif([Quantity]>=10, 10, 0 )

IsNull(Value)

Returns True if the specified Value is NULL.

IsNull([OrderDate])

IsNull(Value1, Value2)

Returns Value1 if it is not set to NULL; otherwise, Value2 is returned.

IsNull([ShipDate], [RequiredDate])

IsNullOrEmpty(String)

Returns True if the specified String object is NULL or an empty string; otherwise, False is returned.

IsNullOrEmpty([ProductName])

Math Functions

Function

Description

Example

Abs(Value)

Returns the absolute, positive value of the given numeric expression.

Abs(1 - [Discount])

Acos(Value)

Returns the arccosine of a number (the angle in radians, whose cosine is the given float expression).

Acos([Value])

Asin(Value)

Returns the arcsine of a number (the angle in radians, whose sine is the given float expression).

Asin([Value])

Atn(Value)

Returns the arctangent of a number (the angle in radians, whose tangent is the given float expression).

Atn([Value])

Atn2(Value1, Value2)

Returns the angle whose tangent is the quotient of two specified numbers in radians.

Atn2([Value1], [Value2])

BigMul(Value1, Value2)

Returns an Int64 containing the full product of two specified 32-bit numbers.

BigMul([Amount], [Quantity])

Ceiling(Value)

Returns the smallest integer that is greater than or equal to the given numeric expression.

Ceiling([Value])

Cos(Value)

Returns the cosine of the angle defined in radians.

Cos([Value])

Cosh(Value)

Returns the hyperbolic cosine of the angle defined in radians.

Cosh([Value])

Exp(Value)

Returns the exponential value of the given float expression.

Exp([Value])

Floor(Value)

Returns the largest integer less than or equal to the given numeric expression.

Floor([Value])

Log(Value)

Returns the natural logarithm of a specified number.

Log([Value])

Log(Value, Base)

Returns the logarithm of a specified number in a specified Base.

Log([Value], 2)

Log10(Value)

Returns the base 10 logarithm of a specified number.

Log10([Value])

Power(Value, Power)

Returns a specified number raised to a specified power.

Power([Value], 3)

Rnd()

Returns a random number that is less than 1, but greater than or equal to zero.

Rnd()*100

Round(Value)

Rounds the given value to the nearest integer.

Round([Value])

Sign(Value)

Returns the positive (+1), zero (0), or negative (-1) sign of the given expression.

Sign([Value])

Sin(Value)

Returns the sine of the angle defined in radians.

Sin([Value])

Sinh(Value)

Returns the hyperbolic sine of the angle defined in radians.

Sinh([Value])

Sqr(Value)

Returns the square root of a given number.

Sqr([Value])

Tan(Value)

Returns the tangent of the angle defined in radians.

Tan([Value])

Tanh(Value)

Returns the hyperbolic tangent of the angle defined in radians.

Tanh([Value])

String Functions

Function

Description

Example

Ascii(String)

Returns the ASCII code value of the leftmost character in a character expression.

Ascii('a')

Char(Number)

Converts an integerASCIICode to a character.

Char(65) + Char(51)

CharIndex(String1, String2)

Returns the starting position of String1 within String2, beginning from the zero character position to the end of a string.

CharIndex('e', 'devexpress')

CharIndex(String1, String2, StartLocation)

Returns the starting position of String1 within String2, beginning from the StartLocation character position to the end of a string.

CharIndex('e', 'devexpress', 2)

Concat(String1, ... , StringN)

Returns a string value containing the concatenation of the current string with any additional strings.

Concat('A', ')', [ProductName])

Insert(String1, StartPosition, String2)

Inserts String2 into String1 at the position specified by StartPositon

Insert([Name], 0, 'ABC-')

Len(Value)

Returns an integer containing either the number of characters in a string or the nominal number of bytes required to store a variable.

Len([Description])

Lower(String)

Returns String in lowercase.

Lower([ProductName])

PadLeft(String, Length)

Left-aligns characters in the defined string, padding its left side with white space characters up to a specified total length.

PadLeft(String, Length, Char)

Left-aligns characters in the defined string, padding its left side with the specified Char up to a specified total length.

PadLeft([Name], 30, '<')

PadRight(String, Length)

Right-aligns characters in the defined string, padding its left side with white space characters up to a specified total length.

PadRight([Name], 30)

PadRight(String, Length, Char)

Right-aligns characters in the defined string, padding its left side with the specified Char up to a specified total length.

PadRight([Name], 30, '>')

Remove(String, StartPosition, Length)

Deletes a specified number of characters from this instance, beginning at a specified position.

Remove([Name], 0, 3)

Replace(String, SubString2, String3)

Returns a copy of String1, in which SubString2 has been replaced with String3.

Replace([Name], 'The ', ''

Reverse(String)

Reverses the order of elements within String.

Reverse([Name])

Substring(String, StartPosition, Length)

Retrieves a substring from String. The substring starts at StartPosition and has the specified Length..

Substring([Description], 2, 3)

Substring(String, StartPosition)

Retrieves a substring from String. The substring starts at StartPosition.

Substring([Description], 2)

ToStr(Value)

Returns a string representation of an object.

ToStr([ID])

Trim(String)

Removes all leading and trailing SPACE characters from String.

Trim([ProductName])

Upper(String)

Returns String in uppercase.

Upper([ProductName])

Constants

Constant

Description

Description

String constants

String constants must be wrapped in apostrophes.

If a string contains an apostrophe, the apostrophe must be doubled.

[Country] == 'France'

[Name] == 'O''Neil'

Date-time constants

Date-time constants must be wrapped in '#'.

[OrderDate] >= #1/1/2009#

True

Represents the Boolean True value.

[InStock] == True

False

Represents the Boolean False value.

[InStock] == False

?

Represents a null reference, one that does not refer to any object.

[Region] != ?

 

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