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Any additional feedback? You can also write an expression to round a value to a multiple that you specify, similar to the MRound function in Excel. Multiply the value by a factor that creates an integer, round the number, and then divide by the same factor. For example, to round 1. The Today function provides the current date. This expression can be used in a text box to display the date on the report, or in a parameter to filter data based on the current date.
Use the DateInterval function to pull out a specific part of a date. Here are some valid DateInterval parameters:. For example, this expression will show the number of the week in the current year for today's date:. The DateAdd function is useful for supplying a range of dates based on a single parameter. The following expression provides a date that is six months after the date from a parameter named StartDate.
The Year function displays the year for a particular date. You can use this to group dates together or to display the year as a label for a set of dates. This expression provides the year for a given group of sales order dates. The Month function and other functions can also be used to manipulate dates. For more information, see the Visual Basic documentation.
You can combine functions in an expression to customize the format. The following expression changes the format of a date in the form month-day-year to month-week-week number. When used as a calculated field in a dataset, you can use this expression on a chart to aggregate values by week within each month. SellStartDate field is a datetime data type. The SellStartDate field is a datetime data type. The CDate function converts the value to a date.
The Now function returns a date value containing the current date and time according to your system. DateDiff returns a Long value specifying the number of time intervals between two Date values. These fields are in two different datasets, DataSet1 and DataSet2. The DatePart function returns an Integer value containing the specified component of a given Date value. The dataset scope is specified because there are multiple datasets in the report. The DateSerial function returns a Date value representing a specified year, month, and day, with the time information set to midnight.
The following example displays the ending date for the prior month, based on the current month. The following expressions display various dates based on a date parameter value selected by the user.
Combine more than one field by using concatenation operators and Visual Basic constants. The following expression returns two fields, each on a separate line in the same text box:.
Format dates and numbers in a string with the Format function. The following expression displays values of the StartDate and EndDate parameters in long date format:. If the text box contains only a date or number, you should use the Format property of the text box to apply formatting instead of the Format function within the text box. The following expression results in the same value as the previous one, using members of the. Display the selected values from a multivalue parameter.
The following example uses the Join function to concatenate the selected values of the parameter MySelection into a single string that can be set as an expression for the value of a text box in a report item:. The following example does the same as the above example, as well as displays a text string prior to the list of selected values.
The Regex functions from the. NET Framework System. RegularExpressions are useful for changing the format of existing strings, for example, formatting a telephone number.
The following expression uses the Replace function to change the format of a ten-digit telephone number in a field from " nnn - nnn - nnnn " to " nnn nnn - nnnn ":. Verify that the value for Fields! Value has no extra spaces and is of type String. By specifying a key field, you can use the Lookup function to retrieve a value from a dataset for a one-to-one relationship, for example, a key-value pair. The following expression displays the product name from a dataset "Product" , given the product identifier to match on:.
By specifying a key field, you can use the LookupSet function to retrieve a set of values from a dataset for a one-to-many relationship. For example, a person can have multiple telephone numbers. In the following example, assume the dataset PhoneList contains a person identifier and a telephone number in each row.
LookupSet returns an array of values. The following expression combines the return values into a single string and displays the list of telephone numbers for the person specified by ContactID:. You can use Visual Basic functions to convert a field from the one data type to a different data type. Conversion functions can be used to convert the default data type for a field to the data type needed for calculations or to combine text.
The following expression converts the constant to type Decimal in order to compare it to a Transact-SQL money data type in the Value field for a filter expression. The following expression displays the number of values selected for the multivalue parameter MySelection.
The Iif function returns one of two values depending on whether the expression is true or not. The following expression uses the Iif function to return a Boolean value of True if the value of LineTotal exceeds Otherwise it returns False :. The following expression can be placed in the fill color of a text box to change the background color depending on the value in the text box. Values greater than or equal to 10 display with a green background, between 1 and 9 display with a blue background, and less than 1 display with a red background.
A different way to get the same functionality uses the Switch function. The Switch function is useful when you have three or more conditions to test. The Switch function returns the value associated with the first expression in a series that evaluates to true:. Values greater than or equal to 10 display with a green background, between 1 and 9 display with a blue background, equal to 1 display with a yellow background, and 0 or less display with a red background.
Test the value of the ImportantDate field and return "Red" if it is more than a week old, and "Blue" otherwise. This expression can be used to control the Color property of a text box in a report item:.
Test the value of the PhoneNumber field and return "No Value" if it is null Nothing in Visual Basic ; otherwise return the phone number value. The ability to create data-driven subscriptions requires expertise in building queries, knowledge of data sources that contain subscriber data, and elevated permissions on a report server. Follow the steps in this tutorial to learn how to create a drillthrough report with parameters and a filter using the ReportViewer control.
These tutorials introduce you a variety of visualizations you can create in Report Builder, such as maps and sparklines, as well as tutorials on how to use parameters and expressions. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info.
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