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This article to introduce how to achieve dynamic ASP.NET Crystal Report disguised, very detailed content, interested in small partners can refer to reference, hope to be helpful to everyone.

Beginners tend to think of ASP.NET Crystal Reports as datagrid, giving it a data source and it will show up. It's not true. However, this dynamic ASP.NET crystal report is not impossible to achieve, but to achieve disguised form, absolute words have to ask the crystal developers.

Roughly talk about how to achieve dynamic ASP.NET crystal reports, the principle is that specific requirements need to call their own.

The main steps to achieve dynamic ASP.NET Crystal Reports:

1. Insert FormulaFields,text object in ASP.NET Crystal Report

2. in the program

Dim dry As New CrystalReport1 'ASP.NET CrystalReport Class Name CrystalReport1 in Project

'Text 1

dry.ReportDefinition.ReportObjects.Item("text1").Left = 12 'Typography

dry.ReportDefinition.ReportObjects.Item("text1").ObjectFormat.EnableCanGrow = True

Dim GetTextObject1 As CrystalDecisions.CrystalReports.Engine.TextObject

GetTextObject1 = dry.ReportDefinition.ReportObjects.Item("text1")

GetTextObject1.Text = "love you.......... " 'Pay value

'Field 1

dry.ReportDefinition.ReportObjects.Item("t1").Left = 12 'Typography

dry.DataDefinition.FormulaFields("t1").Text = "{codes.type_id}" 'Pay value, table name. field

3. basically completed

Realize dynamic ASP.NET crystal report reference knowledge:

1. Retrieves the DataDefinition object through the DataDefinition attribute of the ReportDocument object.

ReportDocument Member

Common Instance Properties

DataDefinition DataDefinition。Gets the DataDefinition object.

2. DataDefinition class

DataDefinition member CrystalDecisions.CrystalReports.Engine namespace

requirements

Namespace: CrystalDecisions.CrystalReports.Engine

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP

Assembly: CrystalDecisions.Crystalreports.Engine (in CrystalDecisions. Crystalreports. Engine.dll)

Contains all information about data operations based on data sources in the report.

For a list of all members of this type, see DataDefinition Members.

Object

DataDefinition

remarks

You can use this class to define how records are selected for reports and groups, and to retrieve collections of groups and various field definitions.

Retrieves the DataDefinition object through the DataDefinition property of the ReportDocument object.

3. Retrieves FormulaFields objects through the FormulaFieldDefinitions property of DataDefinition objects.

DataDefinition Members

DataDefinition class CrystalDecisions.CrystalReports.Engine namespace

Common Instance Properties

FormulaFields FormulaFieldDefinitions。Gets the FormulaFieldDefinitions collection.

4. FormulaFieldDefinitions

FormulaFieldDefinitions member CrystalDecisions.CrystalReports.Engine namespace

requirements

Namespace: CrystalDecisions.CrystalReports.Engine

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP

Assembly: CrystalDecisions.Crystalreports.Engine (in CrystalDecisions. Crystalreports. Engine.dll)

FormulaFieldDefinition objects that contain each formula field in the report.

For a list of all members of this type, see FormulaFieldDefinitions Members.

Object

SCRCollection

FormulaFieldFieldDefinitions

remarks

Retrieves the FormulaFieldDefinitions collection through the FormulaFields property of the DataDefinition object.

5. Get FormulaFieldDefinition object and set formula.

For example: FormulaFieldDefinition.Text = "{Customer. Customer ID}"

FormulaFieldDefinition member

FormulaFieldDefinition class CrystalDecisions.CrystalReports.Engine namespace

Common Instance Properties

FormulaName (inherited from FieldDefinition) string. Gets the field definition *** formula name in Crystal Report formula syntax.

Kind (inherited from FieldDefinition) FieldKind. Gets the type of the field.

Name string. Gets the formula field name displayed in Field Explorer.

NumberOfBytes (inherited from FieldDefinition) Int32. Gets the number of bytes required to store field data in memory.

Text String. Gets or sets the text of the formula.

UseCount (inherited from FieldDefinition) Int32. Gets the number of times a field is used in a report.

ValueType (inherited from FieldDefinition) FieldValueType. Gets the type of the field value.

Common Instance Method

Check the formula. If there is a syntax error, the error string and false are returned.

About how to achieve dynamic ASP.NET Crystal Report disguised to share here, I hope the above content can be of some help to everyone, you can learn more knowledge. If you think the article is good, you can share it so that more people can see it.

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