TypeScript example - custom cell dropdown

[Jack]

Hi, 

I read the thread https://www.syncfusion.com/forums/136659/custom-cell-edittemplate. It helps when we create a datagrid that has different edit types in the same column. It also shows how to change the datasource of the dropdown cell edit from a local item list using JavaScript:

var items = [{ text: "ListItem 1", value: "item1" },  

                    { text: "ListItem 2", value: "item2" }, 

                    { text: "ListItem 3", value: "item3" }, 

                    { text: "ListItem 4", value: "item4" }, 

                    { text: "ListItem 5", value: "item5" }];  

Do you have a TypeScript example? I am struggling on a TS implementation.

Thank you

[Seeni Sakthi Kumar Seeni Raj]

Hi Jack , 

 

As requested , a sample for cell editing dropdown is attached below. Please follow the below steps for more clarifications. In the below sample the dropdown is rendered in the shipcountry column. 

 

 

let itemElem: HTMLElement; 

let itemObj: DropDownList; 

 

let items: { [key: string]: Object }[] = [ 

  { text: "France", value: "item1" },   

  { text: "Germany", value: "item2" },  

  { text: "Brazil", value: "item3" },  

  { text: "Belgium", value: "item4" },  

  { text: "Switzerland", value: "item5" }];   

 

    let grid: Grid = new Grid( 

        { 

         

            dataSource: orderDataSource, 

            editSettings: { allowEditing: true, allowAdding: true, allowDeleting: true, mode: 'Normal' }, 

            allowPaging: true, 

            pageSettings: { pageSize: 6, pageCount: 5 }, 

            toolbar: ['Add', 'Edit', 'Delete', 'Update', 'Cancel'], 

            columns: [ 

                 . . . 

                        . . . 

                { 

                    field: 'ShipCountry', headerText: 'Ship Country',width: 160, edit:{ 

                

                    create: () => { 

                    itemElem = document.createElement('input'); 

                    return itemElem; 

                    }, 

                     

                    read: () => { 

                      return itemObj.text; 

                    }, 

 

                    destroy:() =>{ 

                      itemObj.text; 

                    }, 

 

                    write: (e) => { 

                    var Data = e.rowData.ShipCountry; 

                    itemObj = new DropDownList({ 

                    dataSource: items, 

                    fields : { value:'value' , text :'text'},        

                    text: Data , 

                    floatLabelType: 'Never' 

                    }); 

                     

                  itemObj.appendTo(itemElem); 

                    } 

                 

                }   

              ], 

        }); 

    grid.appendTo('#Grid'); 

 

 

Sample : https://stackblitz.com/edit/phfkvs-9fqal5?file=index.ts 

 

Regards, 

Seeni Sakthi Kumar S 

[Jack]

Hi Seeni,

Thank you so much for the example. It works.

In my case, I want to use this local dropdown for the ShipCountry column depending on the value from the other column. For example when CustomerID = VINET, we use this local dropdown, otherwise we use the defaultedit as the editType for the ShipCountry column. How to do that?

Thanks

Jack

[Seeni Sakthi Kumar Seeni Raj]

 

Hi Jack , 

 

We could see you would like to render the dropdown and textbox and make a toggle between them based  on the value of the other columns. We can achieve your requirement using the edit template feature of the Grid. Refer to the following code example. 

 

index.ts 

{
 field: 'ShipCountry', headerText: 'Ship Country',width: 160, edit:{ 

                

                    create: () => { 

                    itemElem = document.createElement('input'); 

                    return itemElem; 

                    },

                    write: (e) => { 

                    if(e.rowData.CustomerID == "VINET"){ 

                    var Data = e.rowData.ShipCountry; 

                    itemObj = new DropDownList({ 

                    dataSource: items, 

                    fields : { value:'value' , text :'text'},        

                    text: Data , 

                    floatLabelType: 'Never' 

                    }); 

                  itemObj.appendTo(itemElem); 

                    } 

                    else{ 

                      var Pole = e.rowData.ShipCountry; 

                      itemElem.value = Pole; 

                    } 

                    } 

                  } 

                }   

              ], 

        }); 

    grid.appendTo('#Grid'); 

  

Sample : https://stackblitz.com/edit/phfkvs-9fqal5?file=index.ts 

 

Regards, 

Seeni Sakthi Kumar S 

[Jack]

Thank you. That is what I need.

[Seeni Sakthi Kumar Seeni Raj]

Hi Jack,  

  

Thanks for the update.  

  

We are happy to hear your requirement has been achived and you are good to go. 

  

Regards,  

Seeni Sakthi Kumar S