Databases
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  1. PO
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    <p>This code should work. It is similar to ListView's ListViewItemSorter. Using IComparer.</p> <p>To use:</p> <pre><code>private void dgv_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e) { MyDataGridHelper.DataGridSort(dgv, e.ColumnIndex); } </code></pre> <p>MyDataGridHelper.cs:</p> <pre><code>public class MyDataGridHelper { public static void DataGridSort(DataGridView dgv, int column) { DataGridViewCustomSorter dgvSorter = null; if (dgv.Tag == null || !(dgv.Tag is IComparer)) { dgvSorter = new DataGridViewCustomSorter(dgv); dgv.Tag = dgvSorter; } else { dgvSorter = (DataGridViewCustomSorter)dgv.Tag; } dgvSorter.SortColumn = column; dgv.Sort(dgvSorter); } private class DataGridViewCustomSorter : IComparer { private int ColumnIndex; private SortOrder OrderOfSort; private DataGridView myDataGridView; private TypeCode mySortTypeCode; public DataGridViewCustomSorter(DataGridView dgv) { myDataGridView = dgv; mySortTypeCode = Type.GetTypeCode(Type.GetType("System.String")); ColumnIndex = 0; OrderOfSort = SortOrder.None; } public int Compare(object x, object y) { int result; DataGridViewRow dgvX, dgvY; dgvX = (DataGridViewRow)x; dgvY = (DataGridViewRow)y; string sx = dgvX.Cells[ColumnIndex].Value.ToString(); string sy = dgvY.Cells[ColumnIndex].Value.ToString(); //null handling if (sx == String.Empty &amp;&amp; sy == String.Empty) result = 0; else if (sx == String.Empty &amp;&amp; sy != String.Empty) result = -1; else if (sx != String.Empty &amp;&amp; sy == String.Empty) result = 1; else { switch (mySortTypeCode) { case TypeCode.Decimal: Decimal nx = Convert.ToDecimal(sx); Decimal ny = Convert.ToDecimal(sy); result = nx.CompareTo(ny); break; case TypeCode.DateTime: DateTime dx = Convert.ToDateTime(sx); DateTime dy = Convert.ToDateTime(sy); result = dx.CompareTo(dy); break; case TypeCode.String: result = (new CaseInsensitiveComparer()).Compare(sx, sy); break; default: result = (new CaseInsensitiveComparer()).Compare(sx, sy); break; } } if (OrderOfSort == SortOrder.Descending) result = (-result); return result; } public int SortColumn { set { if (ColumnIndex == value) { OrderOfSort = (OrderOfSort == SortOrder.Descending ? SortOrder.Ascending : SortOrder.Descending); } ColumnIndex = value; try { mySortTypeCode = Type.GetTypeCode(Type.GetType((myDataGridView.Columns[ColumnIndex]).Tag.ToString())); } catch { mySortTypeCode = TypeCode.String; } } get { return ColumnIndex; } } public SortOrder Order { set { OrderOfSort = value; } get { return OrderOfSort; } } } //end class DataGridViewCustomSorter } //end class MyDataGridHelper </code></pre>
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    1. POC#: Custom sort of DataGridView
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    1. USJeson Martajaya
    1. USJeson Martajaya
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
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      1. This table or related slice is empty.
      1. VTUpMod
    1. COThis works like a charm (with a bit of tweaking)!
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      1. USZorleQ
 

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Guidance
A row detail

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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