How can I center the text in the headers for an AG-grid control? I have tried using cellstyle and cellclass in the column definition but that did not work. Thank you
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also .ag-header-cell is set to text-align: center – user7400346 Sep 29 '17 at 14:08
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1See, https://stackoverflow.com/questions/57933672/right-align-column-headers-in-aggrid for an answer that worked. – DancingDad Nov 09 '20 at 16:50
14 Answers
I'm using React and I just added the following snippet to my Table component's .css
.ag-header-cell-label {
justify-content: center;
}
I'm overriding the .css
class class from ag-grid
which I found via devtools inspection, and discovered it's using flexbox for display.
See example (not react but same concept): https://embed.plnkr.co/O3NI4WgHxkFiJCyacn0r/

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10What If I want to center text of selected header? Any ideias? How can I get a class from a specific column header? – Bernardo Marques Jun 10 '20 at 15:01
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You may use this property:
cellStyle: {textAlign: 'center'}

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9this does not affect the header. i tried `headerClass` and `headerCellClass` so far no luck.. – Sonic Soul May 18 '21 at 17:25
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A more complete solution I've been using for a while now, is to create a column definition helper like this:
export const columnCentered = {
headerClass: 'text-center',
cellStyle: {
textAlign: 'center',
// Add the following if you are using .ag-header-cell-menu-button
// and column borders are set to none.
// marginLeft: '-16px'
}
}
then add the following to your style.scss
.ag-header-cell.text-center {
.ag-header-cell-label {
justify-content: center;
}
}
finally you can easily use it like this:
columnDefs: [
{ field: 'normalCol' },
{ field: 'centeredColA' ...columnCentered },
{ field: 'centeredColB' ...columnCentered }
]

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Assign a class to the cell as below:
gridOptions = {
...
columnDefs: [
...
{ headerName: "field1", field: "field1", cellClass: "grid-cell-centered"}
...
]
}
css file:
.grid-cell-centered {
text-align: center;
}

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5i have a feeling this will only center the content of the cell and not the header – LucasSeveryn Dec 06 '19 at 16:41
If you want to align your text right, left or center in ag-grid. Then use this:-
cellStyle: { textAlign: 'right' }
cellStyle: { textAlign: 'left' }
cellStyle: { textAlign: 'center' }

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To use a custom class, add headerClass: "text-center"
to the column definition and css as follows:
text-center * {
justifyContent: center
}

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For (independent) customization of each header, you can make a custom header component: https://www.ag-grid.com/javascript-grid-header-rendering/

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I'm using Angular 8 and AG-Grid is nested deep in some other component.
I had to do this in order to make it work.
.ag-header-group-cell-label {
justify-content: center !important;
}
And, this strictly needs to be under styles.scss
file and not in the component scss file. Or else, it will not work.
Hope this helps someone.

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1in component scss file: :host ::ng-deep .ag-header-cell-label { justify-content: center !important; } – Slava Oct 30 '20 at 17:01
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1::ng-deep is being deprecated, just set component's ViewEncapsulation.None and your style works. – tsvedas Apr 28 '21 at 10:12
My CSS:
/*HEADER STYLE*/
.ag-theme-alpine .ag-header-cell {
padding-left: 10px;
padding-right: 10px;
}
.ag-right-header .ag-header-cell-label {
flex-direction: row-reverse;
}
.ag-center-header .ag-header-cell-label {
justify-content: center;
}
.ag-left-header .ag-header-cell-label {
flex-direction: row;
}
.ag-center-cell {
text-align: center;
}
.ag-right-cell {
text-align: right;
}
.ag-left-cell {
text-align: left;
}
And use inside columnDefs:
{
headerName: 'header_name',
field: 'header_field',
headerClass: "ag-center-header",
cellClass: "ag-center-cell"
}

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I'm using angular and I just want to center text in the grouped header so use this code to style.css
.ag-header-group-cell-label {
justify-content: center;
}

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Your answer has been included [here](https://stackoverflow.com/a/62811934/6670491) – HardcoreGamer Aug 09 '21 at 08:32
:host ::ng-deep .my-center-header-class .ag-header-cell-text {
width: 100%;
text-align: center;
}
Set headerClass as 'my-center-header-class' in colDef

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