Hi Bastian,
Thanks for contacting Syncfusion support.
We have analyzed your given source and found that there is missing of column editType properties in the custom column used with column template support. We must provide editType for each column once we have enabled edit support.
Please refer following code snippet,
var cost = {
field: "Cost",
headerText: "Total Cost($)",
columnTemplate: true,
templateId: "columnTemplate",
width: "120px",
editType:"stringedit"
}; |
We have also prepared a sample based on this and please find the sample location,
Please let us know if you require further assistance on this.
Regards,
Jayakumar D