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| Simplify & Clarify Product Messaging | 4/3/2018 | 4/14/2018 | Low |
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| Create Action Plan to Improve Customer Engagement | 8/8/2017 | 4/8/2018 | Medium |
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| Increase Average Subscription Price | 8/9/2017 | 9/13/2017 | Low |
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| Reduce Churn to Less than 1% Monthly | 2/12/2018 | 5/1/2018 | Low |
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| Finalize the Content Strategy | 3/10/2018 | 4/11/2018 | High |
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| Grow Subscriber Base by 5% per Week | 7/24/2017 | 2/10/2018 | Low |
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| Increase the CTR% to Above Industry Average 3.5% | 7/11/2017 | 4/15/2018 | Low |
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| Close the Final Budget | 6/5/2017 | 6/18/2017 | Low |
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| Achieve Record Metrics in All Areas | 4/24/2017 | 2/3/2018 | Low |
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| Begin Content Review | 4/27/2017 | 2/25/2018 | Medium |
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| Produce Online Survey | 10/14/2017 | 3/25/2018 | Low |
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| Improve Our Content and Its Distribution | 4/29/2017 | 11/9/2017 | High |
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| Update Old Content | 2/2/2018 | 4/2/2018 | Medium |
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| Map and Analyze Marketing Channels | 7/5/2017 | 4/19/2018 | Low |
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| Research and Improve Customer Satisfaction | 10/27/2017 | 4/30/2018 | Medium |
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| Present an Action Plan for Next Quarter | 6/6/2017 | 5/11/2018 | High |
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| Achieve Record Revenues While Increasing Profitability | 10/21/2017 | 2/28/2018 | Low |
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| Hit Quarterly Revenue of Over $1000000 | 8/30/2017 | 1/7/2018 | Low |
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| Start Sales in 2 New Countries | 9/26/2017 | 10/4/2017 | Low |
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| Increase Gross Profit Margin from 54% to 63% | 7/14/2017 | 10/25/2017 | Low |
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Our Blazor TreeList uses the standard DataAnnotationsValidator to validate user input (based on data annotation attributes defined in an edit model). The TreeList validates editor values once a user moves focus away from data editors or uses a command that saves changes. In EditCell mode, the TreeList control validates user input when focus moves away from the edited row. The control prevents users from editing a different row until they address all validation errors.
You can implement your custom validator components and declare them in the CustomValidators template. To disable input validation in our Blazor TreeList component, set the ValidationEnabled option to false.
DevExpress Blazor data editors implement the following validation settings:
- ValidationEnabled — Allows you to disable input validation in the editor.
- ShowValidationIcon — Specifies whether the editor displays validation icons.
- ShowValidationSuccessState — Specifies whether the editor displays green outline and validation icon after successful validation.
This demo validates TreeList data against the following rules:
- The Task field is required.
- Start Date and Due Date values must belong to the 01/01/2017 — 01/01/2027 interval.
- The Due Date value cannot be less than the Start Date value.
In this demo, you can use checkboxes in the TreeList toolbar to enable/disable validation and display/hide successful validation results. The Edit Mode combo box allows you to switch between edit modes.
Note: You should not rely on form validation alone to secure your Blazor-powered app. Form validation is designed to improve application usability. A threat actor can bypass validation and send malicious data to the server. To minimize security related threats/risks, you must track data changes using multiple strategies. Refer to the following topic for additional information: Validate User Input.