Modifier

Partager via

DataBinder.GetIndexedPropertyValue Method

  • Reference

Definition

Namespace:
System.Web.UI
Assembly:
System.Web.dll

Retrieves the value of an indexed property.

Overloads

GetIndexedPropertyValue(Object, String)

Retrieves the value of a property of the specified container and navigation path.
GetIndexedPropertyValue(Object, String, String)

Retrieves the value of the specified property for the specified container, and then formats the results.

GetIndexedPropertyValue(Object, String)

Retrieves the value of a property of the specified container and navigation path.

public:
 static System::Object ^ GetIndexedPropertyValue(System::Object ^ container, System::String ^ expr);
public static object GetIndexedPropertyValue (object container, string expr);
static member GetIndexedPropertyValue : obj * string -> obj
Public Shared Function GetIndexedPropertyValue (container As Object, expr As String) As Object

Parameters

container
Object

The object reference against which expr is evaluated. This must be a valid object identifier in the specified language for the page.

expr
String

The navigation path from the container object to the public property value to place in the bound control property. This must be a string of property or field names separated by periods, such as Tables[0].DefaultView.[0].Price in C# or Tables(0).DefaultView.(0).Price in Visual Basic.

Returns

Object

An object that results from the evaluation of the data-binding expression.

Exceptions

ArgumentNullException

container is null.

-or-

expr is null or an empty string ("").

ArgumentException

expr is not a valid indexed expression.

-or-

expr does not allow indexed access.

Remarks

The value of expr must evaluate to a public property.

For any of the list Web controls, such as GridView, DetailsView, DataList, or Repeater, container should be Container.DataItem. If you are binding against the page, container should be Page.

See also

Applies to

GetIndexedPropertyValue(Object, String, String)

Retrieves the value of the specified property for the specified container, and then formats the results.

public:
 static System::String ^ GetIndexedPropertyValue(System::Object ^ container, System::String ^ propName, System::String ^ format);
public static string GetIndexedPropertyValue (object container, string propName, string format);
static member GetIndexedPropertyValue : obj * string * string -> string
Public Shared Function GetIndexedPropertyValue (container As Object, propName As String, format As String) As String

Parameters

container
Object

The object reference against which the expression is evaluated. This must be a valid object identifier in the specified language for the page.

propName
String

The name of the property that contains the value to retrieve.

format
String

A string that specifies the format in which to display the results.

Returns

String

The value of the specified property in the format specified by format.

Examples

The following code example demonstrates how to use the GetIndexedPropertyValue method declaratively to bind to an indexed value.


<%# DataBinder.GetIndexedPropertyValue(Container.DataItem, "[0][0]", "{0:c}") %>


<%# DataBinder.GetIndexedPropertyValue(Container.DataItem, "[0][0]", "{0:c}") %>

Remarks

The GetIndexedPropertyValue method invokes the GetIndexedPropertyValue method, and then uses the String.Format method to format the result as specified in the format parameter. A .NET Framework format string (like those used by String.Format) converts the Object instance returned by the data-binding expression to a String object.

Exceptions that are thrown for the GetIndexedPropertyValue method apply to the GetIndexedPropertyValue method as well.

See also

Applies to