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thinkgeo.mapsuite.windowsphonecore.customcolumnfetcheventargs
Table of Contents
ThinkGeo.MapSuite.WindowsPhoneCore.CustomColumnFetchEventArgs
Note: The page was created before Map Suite 10. Map Suite 10.0 organized many classes into new namespaces and assemblies as well as had a few minor breaks in compatibility. The majority of previously built code should work without modification assuming the new namespaces are added. For guidance on upgrading your existing code, please check out MapSuite 10 Upgrade Guide.
<!– Class –> This class represents the parameters passed in through the CustomFieldFetch event.
Remarks
CustomColumnFetch Event Background
This event is used primarily when you have data relating to a particular feature or set of features that is not within source of the data. For example, you may have a shape file of the world whose .dbf component describes the area and population of each country. Additionally, in an outside SQL Server table, you may also have data about the countries, and it is this data that you wish to use for determining how you want to color each country.
To integrate this SQL data, you simply create a file name that does not exist in the .dbf file. Whenever Map Suite is queried to return records that specifically require this field, the FeatureSource will raise this event and allow you the developer to supply the data. In this way, you can query the SQL table and store the data in some sort of collection, and then when the event is raised, simply supply that data.
As this is an event, it will raise for each feature and field combination requested. This means that the event can be raised quite often, and we suggest that you cache the data you wish to supply in memory. We recommend against sending out a new SQL query each time this event is raised. Image that you are supplementing two columns and your query returns 2,000 rows. This means that if you requested those fields, the event would be raised 4,000 times.
Inheritance Hierarchy
*System.Object System.EventArgs *ThinkGeo.MapSuite.WindowsPhoneCore.CustomColumnFetchEventArgs
Members Summary
Public Constructors
| Name | Parameters | DeclaringType | Summary |
|---|---|---|---|
 CustomColumnFetchEventArgs | String, String | This is the constructor that allows you to create the event arguments. |
Protected Constructors
| Name | Parameters | DeclaringType | Summary |
|---|
Public Methods
| Name | Parameters | DeclaringType | Summary |
|---|---|---|---|
| Equals | Object | Object | |
| GetHashCode | Object | ||
| GetType | Object | ||
| ToString | Object |
Protected Methods
| Name | Parameters | DeclaringType | Summary |
|---|---|---|---|
 Finalize | Object | ||
| MemberwiseClone | Object |
Public Properties
| Name | Return | DeclaringType | Summary |
|---|---|---|---|
 ColumnName | String | This property returns the column name that you need to return data for. | |
| ColumnValue | String | This parameter returns the field decimalDegreesValue that the event is seeking. It is intended to be set in the event. | |
| Id | String | This property returns the Id that you need to return data for. |
Protected Properties
| Name | Return | DeclaringType | Summary |
|---|
Public Events
| Name | Event Arguments | DeclaringType | Summary |
|---|
Public Constructors
CustomColumnFetchEventArgs(String, String)
This is the constructor that allows you to create the event arguments.
Parameters
| Name | Type | Description |
|---|---|---|
| columnName | String<!– System.String –> | The column name you need data for. |
| id | String<!– System.String –> | The Id of the feature you need data for. |
Protected Constructors
Public Methods
Equals(Object)
Return Value
| Return Type | Description |
|---|---|
| Boolean<!– System.Boolean –> |
Parameters
| Name | Type | Description |
|---|---|---|
| obj | Object<!– System.Object –> |
<!– System.Object –> Go Back
GetHashCode()
Return Value
| Return Type | Description |
|---|---|
| Int32<!– System.Int32 –> |
Parameters
| Name | Type | Description |
|---|
<!– System.Object –> Go Back
GetType()
Return Value
| Return Type | Description |
|---|---|
| Type<!– System.Type –> |
Parameters
| Name | Type | Description |
|---|
<!– System.Object –> Go Back
ToString()
Return Value
| Return Type | Description |
|---|---|
| String<!– System.String –> |
Parameters
| Name | Type | Description |
|---|
<!– System.Object –> Go Back
Protected Methods
Finalize()
Return Value
| Return Type | Description |
|---|---|
| Void<!– System.Void –> |
Parameters
| Name | Type | Description |
|---|
<!– System.Object –> Go Back
MemberwiseClone()
Return Value
| Return Type | Description |
|---|---|
| Object<!– System.Object –> |
Parameters
| Name | Type | Description |
|---|
<!– System.Object –> Go Back
Public Properties
ColumnName
This property returns the column name that you need to return data for.
Remarks
You will need to look up the Id in your external data source and find this column's data.
CustomColumnFetch Event Background
This event is used primarily when you have data relating to a particular feature or set of features that is not within source of the data. For example, you may have a shape file of the world whose .dbf component describes the area and population of each country. Additionally, in an outside SQL Server table, you may also have data about the countries, and it is this data that you wish to use for determining how you want to color each country.
To integrate this SQL data, you simply create a file name that does not exist in the .dbf file. Whenever Map Suite is queried to return records that specifically require this field, the FeatureSource will raise this event and allow you the developer to supply the data. In this way, you can query the SQL table and store the data in some sort of collection, and then when the event is raised, simply supply that data.
As this is an event, it will raise for each feature and field combination requested. This means that the event can be raised quite often, and we suggest that you cache the data you wish to supply in memory. We recommend against sending out a new SQL query each time this event is raised. Image that you are supplementing two columns and your query returns 2,000 rows. This means that if you requested those fields, the event would be raised 4,000 times.
Return Value
| Return Type |
|---|
| String<!– System.String –> |
<!– ThinkGeo.MapSuite.WindowsPhoneCore.CustomColumnFetchEventArgs –> Go Back
ColumnValue
This parameter returns the field decimalDegreesValue that the event is seeking. It is intended to be set in the event.
Remarks
When you lookup the Id and FieldName, you should set this property with the data from your external data source.
CustomColumnFetch Event Background
It is used primarily when you have data relating to a particular feature or set of features that is not within source of the data. For example, you may have a shape file of the world whose .dbf component describes the area and population of each country. Additionally, in an outside SQL Server table, you may also have data about the countries, and it is this data that you wish to use for determining how you want to color each country.
To integrate this SQL data, you simply create a file name that does not exist in the .dbf file. Whenever Map Suite is queried to return records that specifically require this field, the FeatureSource will raise this event and allow you the developer to supply the data. In this way, you can query the SQL table and store the data in some sort of collection, and then when the event is raised, simply supply that data.
As this is an event, it will raise for each feature and field combination requested. This means that the event can be raised quite often, and we suggest that you cache the data you wish to supply in memory. We recommend against sending out a new SQL query each time this event is raised. Image that you are supplementing two columns and your query returns 2,000 rows. This means that if you requested those fields, the event would be raised 4,000 times.
Return Value
| Return Type |
|---|
| String<!– System.String –> |
<!– ThinkGeo.MapSuite.WindowsPhoneCore.CustomColumnFetchEventArgs –> Go Back
Id
This property returns the Id that you need to return data for.
Remarks
You will need to look up the Id in your external data source and find this field's data.
CustomColumnFetch Event Background
It is used primarily when you have data relating to a particular feature or set of features that is not within source of the data. For example, you may have a shape file of the world whose .dbf component describes the area and population of each country. Additionally, in an outside SQL Server table, you may also have data about the countries, and it is this data that you wish to use for determining how you want to color each country.
To integrate this SQL data, you simply create a file name that does not exist in the .dbf file. Whenever Map Suite is queried to return records that specifically require this field, the FeatureSource will raise this event and allow you the developer to supply the data. In this way, you can query the SQL table and store the data in some sort of collection, and then when the event is raised, simply supply that data.
As this is an event, it will raise for each feature and field combination requested. This means that the event can be raised quite often, and we suggest that you cache the data you wish to supply in memory. We recommend against sending out a new SQL query each time this event is raised. Image that you are supplementing two columns and your query returns 2,000 rows. This means that if you requested those fields, the event would be raised 4,000 times.
Return Value
| Return Type |
|---|
| String<!– System.String –> |
<!– ThinkGeo.MapSuite.WindowsPhoneCore.CustomColumnFetchEventArgs –> Go Back
Protected Properties
Public Events
thinkgeo.mapsuite.windowsphonecore.customcolumnfetcheventargs.txt · Last modified: 2017/03/16 21:59 (external edit)