c# - How to filter data using Entity Framework in a way that DataGridView be editable and context track changes? - Stack Overflow

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Tue Dec 28 2021 04:21:37 GMT+0000 (Coordinated Universal Time)

Saved by @TEST12 #c#

SampleDbEntities db = new SampleDbEntities();
private void Form1_Load(object sender, EventArgs e)
{
    db.Configuration.ProxyCreationEnabled = false;
    db.Products.Load();
    this.productsBindingSource.DataSource = db.Products.Local.ToBindingList();
}
private void FilterButton_Click(object sender, EventArgs e)
{
    if (string.IsNullOrEmpty(this.FilterTextBox.Text))
    {
        this.productsBindingSource.DataSource = db.Products.Local.ToBindingList();
    }
    else
    {
        var filteredData = db.Products.Local.ToBindingList()
            .Where(x => x.Name.Contains(this.FilterTextBox.Text));
        this.productsBindingSource.DataSource = filteredData.Count() > 0 ?
            filteredData : filteredData.ToArray();
    }
}
private void productBindingNavigatorSaveItem_Click(object sender, EventArgs e)
{
    this.Validate();
    productsBindingSource.EndEdit();
    db.SaveChanges();
}
private void bindingNavigatorDeleteItem_Click(object sender, EventArgs e)
{
    if (productsBindingSource.Current != null)
    {
        var current = (Product)this.productsBindingSource.Current;
        this.productsBindingSource.RemoveCurrent();
        if (!string.IsNullOrEmpty(this.FilterTextBox.Text))
            db.Products.Local.Remove(current);
    }
}

https://stackoverflow.com/questions/35977042/how-to-filter-data-using-entity-framework-in-a-way-that-datagridview-be-editable

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using System.Collections.Generic;
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using System;
using System.Collections.Generic;
using System.Text;
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using Microsoft.EntityFrameworkCore;
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using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
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using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
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using System.Collections.Generic;
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