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POHow to DataGridViewComboBoxColumn set value from dataset
 

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    <p>Let's say i have two tables:</p> <pre><code> work_hours work_hours_id | date | _project_id 1 1.2. 10 2 1.2. 11 3 1.2. 10 project project_id | project_name 10 pr1 11 pr2 12 pr3 </code></pre> <p>In DataGridView i want to see this:</p> <pre><code> work_hours_id | date | _person_id | project_name(DataGridViewComboBoxColumn) 1 1.2. 10 pr1 2 1.2. 11 pr2 3 1.2. 10 pr1 </code></pre> <p><strong>1.</strong> How can i do that? <strong>2.</strong> Is possible to save changes in table <code>work_hours</code>, if i change pr1 (<code>work_hours_id = 3</code>) to pr3 (<code>DataGridViewComboBoxColumn</code>) with <code>SqlCommandBuilder</code>? </p> <pre><code> string query = "SELECT work_hours.work_hours_id, work_hours.date FROM work_hours LEFT OUTER JOIN project ON work_hours._project_id = project.project_id ORDER BY work_hours.date; SELECT * FROM project ORDER BY project_name"; SqlCommand sqlcmd = new SqlCommand(query, conn); da = new SqlDataAdapter(query, connectionString); cBuilder = new SqlCommandBuilder(da); dt = new DataTable(); ds = new DataSet(); da.Fill(dt); da.Fill(ds); DataGridViewComboBoxColumn columnCb = new DataGridViewComboBoxColumn(); columnCb.DataPropertyName = "_project_id"; columnCb.DataSource = ds.Tables[1]; columnCb.ValueMember = "project_id"; columnCb.DisplayMember = "project_name"; bSource = new BindingSource(); bSource.DataSource = dt; dataGridView1.DataSource = bSource; dataGridView1.Columns.Add(columnCb); </code></pre> <p><img src="https://i.stack.imgur.com/jpqtJ.jpg" alt="Here is example:"></p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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