FAQ

You have to install PostgreSQL Client Server before using the PostgreSQL database; and set the environment variable, if a firewall is installed on the server, you need to open the port of the monitor (the standard port is 5432).

You have to install Oracle Client Server before using the Oracle database; and you have to modify the maximum number of connection and cursor of server, when the connection number is large.

In order to use PostgreSQL database, requires to install PostgreSQL client; requires to set the environmental elements of PostgreSQL; if there is a firewall in server, need to open the interface of monitor system (standard interface is 5432).

The Alpha setting is from 8C version. To compatible with map data used before 8C, when set the Alpha as 0, the system will change to 255 bu default.

Please change other PDF virtual printers.

The problem is caused for the difference of the License Configuration Tool version. If the operation system are is Win7(32bit or 64bit),Vista(64bit),Windows server 2008(32bit or 64bit) or Windows server 2003(64bit), the problem is liked to occured. The resolution is to download the newest version of License Configuration Tool and reconfigure it.

The version before SP2 has some programs in supported Chinese characters. SP2 has improved the supporting.

You can solve this problem by the following steps:In the Application page of the program attribute, change the Target Framework to .NET Framework 4 (the default value is .NET Framework 4 Client Profile).Modify app.config, add the following content in startup:useLegacyV2RuntimeActivationPolicy = "true"useLegacyV2RuntimeActivationPolicy = "true"The problem is solved.

An exception will be thrown for the stability of the software. Usually it is caused by the program of operating environment. If encountered with this program, the user could catch the exception and resolve it by reviewing the type of the exception.

The current computer configuration is related. Please check up whether to set the hardware acceleration to the full station or not.Steps to open the hardware acceleration: Select the blank of the desktop, then right-click to select the “Properties” item, select the “settings”, click the “Advanced” button, choose the “Troubleshoot” to check up the station of hardware acceleration.

Please dispose after update(), with the following codes:recordset.AddNew(region);recordset.Update();region.Dispose();

>Please check the ID of the filling marker in the Style of the selection. 1 means no filling, 0 means filling.

Please check that whether you change the ImageSize property value of map or the size of the mapcontrol after transferring the ViewEntire method. If you need viewentire the map after change the size ,you should transfer the ViewEntire method again.

If you want to draw temporary object, please transfer the TrackMode method in MapControl first.

When you use the data from the SDB datasource for making the 3D thematic map, you must call the method, Layer3DDataset.UpdateData() of this thematic map layer after adding it to the scene; otherwise the thematic map layer cannot display.

When you use the dataset in the datasource whose engine type is Oracle, SQL or DB2 to make the unique map, if you use the relational expression such as "SmID>100" as the field expression, the operation will fail and return null. Therefore the field expression should be the field name or the arithmetic expression such as "SmID" and "SmID + 1 "

When the MapControl object doesn't display, you had better not evoke the methods which begin with Do such as DoMouseDown; otherwise it may crash.ds

Be default, the IsTextOrientationFixed property of Map class is true, which indicates some texts are unable to be displayed on a map. When the Label map and Graph map are displayed simultaneously, or multi-layers exist in the same map, the display effect of the map depends on the sequence of layers added to the map. If the IsTextOverlapAvoided property is set to false, the overlapped texts can be displayed.

A: The origin of the map coordinate system is at the left bottom, and the positive direction of X and Y is rightward and upward respectively. The origin of the screen coordinate system is at the top left, and the positive direction of X and Y is rightward and downward respectively.

A: Yes, it needs to be. You can first close map or MapControl, and then close the Workspace.