ExtensionHelper扩展帮助类

public static class ExtensionHelper{}

字符串转换成指定类型的值

using System.ComponentModel;
/// <summary>
/// 字符串转换成指定类型的值
/// </summary>
/// <typeparam name="T">指定类型</typeparam>
/// <param name="input">字符串</param>
/// <returns>类型的值</returns>
public static T Value<T>(this string input)
{
    try
    {
        return (T)TypeDescriptor.GetConverter(typeof(T)).ConvertFromString(input);
    }
    catch
    {
        return default;
    }
}

DataGrid扩展

public static DataGridCell GetCell(this DataGrid grid, DataGridRow row, int column)
{
    if (row != null)
    {
        var presenter = WSCommFunc.GetVisualChild<System.Windows.Controls.Primitives.DataGridCellsPresenter>(row);
        if (presenter == null)
        {
            grid.ScrollIntoView(row, grid.Columns[column]);
            presenter = WSCommFunc.GetVisualChild<System.Windows.Controls.Primitives.DataGridCellsPresenter>(row);
        }
        return (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
    }
    return null;
}

public static DataGridCell GetCell(this DataGrid grid, int row, int column)
{
    DataGridRow rowContainer = grid.GetRow(row);
    return grid.GetCell(rowContainer, column);
}
public static DataGridRow GetRow(this DataGrid grid, int index)
{
    if (index < 0)
    {
        return null;
    }
    var row = (DataGridRow)grid.ItemContainerGenerator.ContainerFromIndex(index);
    if (row == null)
    {
        // 可能已虚拟化，进入视图并重试
        grid.UpdateLayout();
        grid.ScrollIntoView(grid.Items[index]);
        row = (DataGridRow)grid.ItemContainerGenerator.ContainerFromIndex(index);
    }
    return row;
}

扩展方法	解释	入口
TraceMessage	Caller Information Attributes调用者信息特性	demo
RemoveAll	IList清空	demo
OnUIThread	多线程更新GUI	demo
DeepCopy	DeepCopyByExpressTree 利用表达式树实现深复制	demo