Is it possible to display a joined query in a DataGridView?
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I have an Entity Framework application and I need to set the DataSource property of a BindingSource to the result of a joined query like so:
var joined = _context.Products.Join(_context.Categories, p=>p.CategoryId, c=>c.CategoryId, (product, category) => new
{
ProductName = product.Name,
CategoryName = category.Name
});
Is this possible or DataSources must equate to DbSet<>s?
For instance, this works:
this.supplierBindingSource.DataSource = _context.Suppliers.Local.ToBindingList();
Regards,
Juan
c# entity-framework
asked Nov 16 '18 at 21:51
Juan DentJuan Dent
1031213
add a comment |
0
I have an Entity Framework application and I need to set the DataSource property of a BindingSource to the result of a joined query like so:
var joined = _context.Products.Join(_context.Categories, p=>p.CategoryId, c=>c.CategoryId, (product, category) => new
{
ProductName = product.Name,
CategoryName = category.Name
});
Is this possible or DataSources must equate to DbSet<>s?
For instance, this works:
this.supplierBindingSource.DataSource = _context.Suppliers.Local.ToBindingList();
Regards,
Juan
c# entity-framework
asked Nov 16 '18 at 21:51
Juan DentJuan Dent
1031213
add a comment |
0
0
0
I have an Entity Framework application and I need to set the DataSource property of a BindingSource to the result of a joined query like so:
var joined = _context.Products.Join(_context.Categories, p=>p.CategoryId, c=>c.CategoryId, (product, category) => new
{
ProductName = product.Name,
CategoryName = category.Name
});
Is this possible or DataSources must equate to DbSet<>s?
For instance, this works:
this.supplierBindingSource.DataSource = _context.Suppliers.Local.ToBindingList();
Regards,
Juan
c# entity-framework
asked Nov 16 '18 at 21:51
Juan DentJuan Dent
1031213
I have an Entity Framework application and I need to set the DataSource property of a BindingSource to the result of a joined query like so:
var joined = _context.Products.Join(_context.Categories, p=>p.CategoryId, c=>c.CategoryId, (product, category) => new
{
ProductName = product.Name,
CategoryName = category.Name
});
Is this possible or DataSources must equate to DbSet<>s?
For instance, this works:
this.supplierBindingSource.DataSource = _context.Suppliers.Local.ToBindingList();
Regards,
Juan
c# entity-framework
c# entity-framework
asked Nov 16 '18 at 21:51
Juan DentJuan Dent
1031213
asked Nov 16 '18 at 21:51
Juan DentJuan Dent
1031213
asked Nov 16 '18 at 21:51
Juan DentJuan Dent
1031213
asked Nov 16 '18 at 21:51
Juan DentJuan Dent
1031213
asked Nov 16 '18 at 21:51
Juan DentJuan Dent
1031213
1031213
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
0
I believe you would want to create a class for the results of the join and instantiate that as below:
class ProductCategory
{
string ProductName { get; set; }
string CategoryName { get; set; }
}
private void test()
{
var joined = _context.Products.Join(_context.Categories, p => p.CategoryId, c => c.CategoryId, (product, category) => new ProductCategory
{
ProductName = product.Name,
CategoryName = category.Name
});
}
answered Nov 17 '18 at 1:41
Jon VoteJon Vote
38710
That's just the first step. The problem is how can you set the DataSource property to a BindingList! So for example, adding the class you suggest allows us to create a DataSource (based on that class) but there is no way to bind that to a binding source or DataGridView because we cannot do this: this.productCategoryBindingSource.DataSource = joined.Local.ToBindingList();
– Juan Dent
Nov 17 '18 at 23:09
add a comment |
0
The final solution is:
var theList = joined.ToList();
var bindList = new BindingList<ProductCategory>(theList);
this.dataGridView4.DataSource = bindList;
This works!
answered Nov 17 '18 at 23:58
Juan DentJuan Dent
1031213
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
I believe you would want to create a class for the results of the join and instantiate that as below:
class ProductCategory
{
string ProductName { get; set; }
string CategoryName { get; set; }
}
private void test()
{
var joined = _context.Products.Join(_context.Categories, p => p.CategoryId, c => c.CategoryId, (product, category) => new ProductCategory
{
ProductName = product.Name,
CategoryName = category.Name
});
}
answered Nov 17 '18 at 1:41
Jon VoteJon Vote
38710
That's just the first step. The problem is how can you set the DataSource property to a BindingList! So for example, adding the class you suggest allows us to create a DataSource (based on that class) but there is no way to bind that to a binding source or DataGridView because we cannot do this: this.productCategoryBindingSource.DataSource = joined.Local.ToBindingList();
– Juan Dent
Nov 17 '18 at 23:09
add a comment |
0
I believe you would want to create a class for the results of the join and instantiate that as below:
class ProductCategory
{
string ProductName { get; set; }
string CategoryName { get; set; }
}
private void test()
{
var joined = _context.Products.Join(_context.Categories, p => p.CategoryId, c => c.CategoryId, (product, category) => new ProductCategory
{
ProductName = product.Name,
CategoryName = category.Name
});
}
answered Nov 17 '18 at 1:41
Jon VoteJon Vote
38710
That's just the first step. The problem is how can you set the DataSource property to a BindingList! So for example, adding the class you suggest allows us to create a DataSource (based on that class) but there is no way to bind that to a binding source or DataGridView because we cannot do this: this.productCategoryBindingSource.DataSource = joined.Local.ToBindingList();
– Juan Dent
Nov 17 '18 at 23:09
add a comment |
0
0
0
I believe you would want to create a class for the results of the join and instantiate that as below:
class ProductCategory
{
string ProductName { get; set; }
string CategoryName { get; set; }
}
private void test()
{
var joined = _context.Products.Join(_context.Categories, p => p.CategoryId, c => c.CategoryId, (product, category) => new ProductCategory
{
ProductName = product.Name,
CategoryName = category.Name
});
}
answered Nov 17 '18 at 1:41
Jon VoteJon Vote
38710
I believe you would want to create a class for the results of the join and instantiate that as below:
class ProductCategory
{
string ProductName { get; set; }
string CategoryName { get; set; }
}
private void test()
{
var joined = _context.Products.Join(_context.Categories, p => p.CategoryId, c => c.CategoryId, (product, category) => new ProductCategory
{
ProductName = product.Name,
CategoryName = category.Name
});
}
answered Nov 17 '18 at 1:41
Jon VoteJon Vote
38710
answered Nov 17 '18 at 1:41
Jon VoteJon Vote
38710
answered Nov 17 '18 at 1:41
Jon VoteJon Vote
38710
answered Nov 17 '18 at 1:41
Jon VoteJon Vote
38710
38710
That's just the first step. The problem is how can you set the DataSource property to a BindingList! So for example, adding the class you suggest allows us to create a DataSource (based on that class) but there is no way to bind that to a binding source or DataGridView because we cannot do this: this.productCategoryBindingSource.DataSource = joined.Local.ToBindingList();
– Juan Dent
Nov 17 '18 at 23:09
add a comment |
That's just the first step. The problem is how can you set the DataSource property to a BindingList! So for example, adding the class you suggest allows us to create a DataSource (based on that class) but there is no way to bind that to a binding source or DataGridView because we cannot do this: this.productCategoryBindingSource.DataSource = joined.Local.ToBindingList();
– Juan Dent
Nov 17 '18 at 23:09
That's just the first step. The problem is how can you set the DataSource property to a BindingList! So for example, adding the class you suggest allows us to create a DataSource (based on that class) but there is no way to bind that to a binding source or DataGridView because we cannot do this: this.productCategoryBindingSource.DataSource = joined.Local.ToBindingList();
– Juan Dent
Nov 17 '18 at 23:09
That's just the first step. The problem is how can you set the DataSource property to a BindingList! So for example, adding the class you suggest allows us to create a DataSource (based on that class) but there is no way to bind that to a binding source or DataGridView because we cannot do this: this.productCategoryBindingSource.DataSource = joined.Local.ToBindingList();
– Juan Dent
Nov 17 '18 at 23:09
add a comment |
0
The final solution is:
var theList = joined.ToList();
var bindList = new BindingList<ProductCategory>(theList);
this.dataGridView4.DataSource = bindList;
This works!
answered Nov 17 '18 at 23:58
Juan DentJuan Dent
1031213
add a comment |
0
The final solution is:
var theList = joined.ToList();
var bindList = new BindingList<ProductCategory>(theList);
this.dataGridView4.DataSource = bindList;
This works!
answered Nov 17 '18 at 23:58
Juan DentJuan Dent
1031213
add a comment |
0
0
0
The final solution is:
var theList = joined.ToList();
var bindList = new BindingList<ProductCategory>(theList);
this.dataGridView4.DataSource = bindList;
This works!
answered Nov 17 '18 at 23:58
Juan DentJuan Dent
1031213
The final solution is:
var theList = joined.ToList();
var bindList = new BindingList<ProductCategory>(theList);
this.dataGridView4.DataSource = bindList;
This works!
answered Nov 17 '18 at 23:58
Juan DentJuan Dent
1031213
answered Nov 17 '18 at 23:58
Juan DentJuan Dent
1031213
answered Nov 17 '18 at 23:58
Juan DentJuan Dent
1031213
answered Nov 17 '18 at 23:58
Juan DentJuan Dent
1031213
1031213
add a comment |
add a comment |
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