Manipulate custom values at entry time

Thread ID:	Created:	Updated:	Platform:	Replies:
144238	Apr 26,2019 12:25 AM UTC	Apr 26,2019 07:14 AM UTC	ASP.NET Core - EJ 2	1

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Tags: MultiSelect Dropdown

Jake Adams

Asked On April 26, 2019 12:25 AM UTC

Hi guys, I have a multiselect which allows custom entries. My use case is the user can enter an email address or select one from a predefined list. What I'd like to achieve is when the user enters a custom value, it is automatically checked against a regex to determine validity and removed if it is not. First off, I can't seem to get the customValueSelection event to fire. I can get select to respond but then I'm struggling with that removal step.

In the code below I'm just trying to remove anything the user enters

<ejs-multiselect id="txtTo" allowCustomValue="true" select="tochange" placeholder="To" floatLabelType="Auto" delimiterChar=";">

<e-multiselect-fields text="EMAIL" value="EMAIL"></e-multiselect-fields>

</ejs-multiselect>

function tochange(args) {

console.log(args);

$("#txtTo")[0].ej2_instances[0].removeValue(args.itemData.EMAIL);

}

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Ashokkumar Balasubramanian [Syncfusion]

Replied On April 26, 2019 07:14 AM UTC

Hi Jake Adams,

Greetings from Syncfusion support.

We were able to remove the custom value on selection in MultiSelect component. In our MultiSelect component customValueSelection event will fired only on select custom values and returned corresponding event cancel parameter. If you need to remove the invalid typed text mean, set true value for cancel (args.cancel = true) parameter in customValueSelection event.

Also, you need to restrict the selected value for already loaded items means, we suggest use the select event and set true value for cancel parameter. If you do this in select event, corresponding value is not updated to input element. Please find the code snippet for your reference.

<ejs-multiselect id="txtTo" allowCustomValue="true" select="tochange" customValueSelection="onCustomSelection" placeholder="To" delimiterChar=";" floatLabelType="Auto">

<e-multiselect-fields text="EMAIL" value="EMAIL"></e-multiselect-fields>

</ejs-multiselect>

</div>

function onCustomSelection(args) {

args.cancel = true; // restring the custom value selection.

}

function tochange(e) {

args.cancel = true; // restrict the select value.

}

</script>

Please check the above provided code blocks and do the logic for your need in your application and update if you need any further assistance.

Regards,

Ashokkumar B.

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Manipulate custom values at entry time

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