c# datagridview resize columns to fit content code example

Example 1: datagridview c# resize columns

private void Form1_Load(object sender, System.EventArgs e)
{
    // Bind the DataGridView controls to the BindingSource
    // components and load the data from the database.
    masterDataGridView.DataSource = masterBindingSource;
    detailsDataGridView.DataSource = detailsBindingSource;
    GetData();

    // Resize the master DataGridView columns to fit the newly loaded data.
    masterDataGridView.AutoResizeColumns();

    // Configure the details DataGridView so that its columns automatically
    // adjust their widths when the data changes.
    detailsDataGridView.AutoSizeColumnsMode = 
        DataGridViewAutoSizeColumnsMode.AllCells;
}

Example 2: Resizing UITableView to fit content

// Swift 5 and 4.2 solution without KVO, DispatchQueue, or setting constraints yourself.

// This solution is based on Gulz's answer.

// 1) Create a subclass of UITableView:

import UIKit

final class ContentSizedTableView: UITableView {
    override var contentSize:CGSize {
        didSet {
            invalidateIntrinsicContentSize()
        }
    }

    override var intrinsicContentSize: CGSize {
        layoutIfNeeded()
        return CGSize(width: UIView.noIntrinsicMetric, height: contentSize.height)
    }
}
// 2) Add a UITableView to your layout and set constraints on all sides. Set the class of it to ContentSizedTableView.

// 3) You should see some errors, because Storyboard doesn't take our subclass' intrinsicContentSize into account. Fix this by opening the size inspector and overriding the intrinsicContentSize to a placeholder value. This is an override for design time. At runtime it will use the override in our ContentSizedTableView class