An advanced control for complex data entry forms, commonly used to select cascading options from hierarchical data.
Scenarios
Use the tree drop-down control to select cascading data from a hierarchy. For example, select a customer region and the corresponding province and city in the region.
Renderings
Control configuration
Basic parameters
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Parameter |
Description |
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① Display Title: Specifies whether to display the control title. You can customize the display name, which serves as the column name in the data form. |
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② Control type: After you select a control, you can change the control type. The drop-down options support replacement with other basic and advanced control types. |
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③ Table Field Name: The name of the corresponding field in the database table created from the data form. Note
The field or table name must start with a letter and can contain letters, digits, and underscores (_). The name can be up to 40 characters in length. |
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④ Prompt: The placeholder text displayed in the control. For example, Select.
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⑤ Description: A custom description for the control. |
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⑥ Description Information Location: The position of the description text. Valid values: Bottom, Right, and Below. |
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Default State: The initial state of the control. Valid values: Normal, Read-only, and Hidden. |
Option
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Parameter |
Description |
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Select Data Source from the Source drop-down list. |
Source: Select Data Source or Dataset as the data source type. |
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② Data Source: Select a data source from the drop-down list. |
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③ Data Table: Select a data table from the drop-down list. |
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④ Field to be Linked: Select Field to be Linked from the drop-down list. Note
The levels of the tree drop-down take effect based on the order in which the data fields are added.
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Select Dataset from the Source drop-down list.
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① Source: Select Data Source or Dataset as the data source type. |
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② Dataset: Select a dataset from the drop-down list. |
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③ Data Field: Select a data field from the Data Field drop-down list.
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Validation
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Parameter |
Description |
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① Required: Specifies whether the field is required. If you select this option, the control is set to Required. |
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② Input data invalid prompt text: The custom error message displayed when a validation rule is triggered. For example, if Required is selected and no value is specified, this error message is displayed. |
Section
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Parameter |
Description |
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Widget Width: Set the width to Default or Whole Line. Note
You can also drag the control border to manually adjust the width.
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