Displaying foreign key data in Windows Application GridView

Question

I have two Tables

'Item Catagory' with fields

CatagoryId

and

CatagoryName

and Items

with fields

ItemId

and

CatagoryId

Now on Item Form I want to Display Item Data in A DataGridView

I want to Display CatogoryName From ItemCatogory Table in a GridView Columm

Currently I am not able to do that, Can Any One Help me in this Regard ???

Answer 1

Your Query to bind with gridview should be like this.

SELECT Items.ItemId, ItemCatogory.CatogoryName FROM Items JOIN ItemCatogory USING(CatagoryId)

Here is a sample code to do this:

using System.Data;
using System.Data.SqlClient;

then

SqlDataAdapter da;
DataSet ds = new DataSet();
SqlCommand cmd = new SqlCommand();
static SqlConnection oc = new SqlConnection(@"Data Source=xxxx;Network Library=DBMSSOCN;Initial Catalog=xxxx;User Id=xxxx;Password=xxxx;");
cmd.CommandText = "SELECT Items.ItemId, ItemCatogory.CatogoryName FROM Items JOIN ItemCatogory USING(CatagoryId)";

oc.Open();
cmd.Connection = oc;
da = new SqlDataAdapter(cmd);
da.Fill(ds);
cmd.ExecuteNonQuery();

GridView1.DataSource = ds;

GridView1.DataBind();

oc.Close();