/// <summary>
/// Get sort expression and direction into a string as orderby
/// </summary>
/// <param name="e"></param>
/// <returns></returns>
private void SetCustomSortExpression(GridViewSortEventArgs e)
{
string sortExpression = e.SortExpression.ToString();
if (!CustSortExpression.Contains(sortExpression)) //First click on a column
{
CustSortExpression = String.Concat(sortExpression, ascStr);
}
else //clicks more than once
{
if (CustSortExpression.Contains(ascStr))
{
CustSortExpression = String.Concat(sortExpression, descStr);
}
else
{
CustSortExpression = String.Concat(sortExpression, ascStr);
}
}
}
/// <summary>
/// Create new header's style
/// </summary>
/// <param name="gridViewRow"></param>
protected void CreateHeader(GridViewRow gridViewRow)
{
for (int i = 0; i < this.Columns.Count; i++)
{
string sortExpression = this.Columns[i].SortExpression;
TableCell tableCell = gridViewRow.Cells[i];
//tableCell.CssClass = "GridHeader";
//Make sure the column we are working with has a sort expression
if (!string.IsNullOrEmpty(sortExpression) && tableCell.Controls.Count > 0)
{
LinkButton linkButton = tableCell.Controls[0] as LinkButton;
if (linkButton != null)
{
linkButton.Style.Add("width", "100%");
linkButton.Style.Add("display", "inline-block");
linkButton.Style.Add("text-decoration", "none");
linkButton.Style.Add("padding-bottom", this.HeaderPadding);
linkButton.Style.Add("padding-top", this.HeaderPadding);
}
if ((!String.IsNullOrEmpty(CustSortExpression)) && (CustSortExpression.StartsWith(sortExpression)))
{
Style a = new Style();
Color b = ColorTranslator.FromHtml(this.SortColor);
a.BackColor = b;
tableCell.ApplyStyle(a);
//tableCell.CssClass = "GridHeader GridHeader-Active";
}
tableCell.Style.Add(HtmlTextWriterStyle.Cursor, "hand");
tableCell.Style.Add(HtmlTextWriterStyle.Cursor, "pointer");
tableCell.Wrap = false;
}
}
}
/// <summary>
/// Create active sorted row background
/// </summary>
/// <param name="gridViewRow"></param>
protected void CreateRowBackground(GridViewRow gridViewRow)
{
if (gridViewRow.RowType == DataControlRowType.DataRow)
{
for (int i = 0; i < gridViewRow.Cells.Count; i++)
{
if ((!String.IsNullOrEmpty(CustSortExpression)) && !String.IsNullOrEmpty(this.Columns[i].SortExpression) && (CustSortExpression.StartsWith(this.Columns[i].SortExpression)))
{
Color sortColumnBgColor;
sortColumnBgColor = (gridViewRow.RowState != DataControlRowState.Alternate) ?
ColorTranslator.FromHtml("#d7e3f1") : ColorTranslator.FromHtml("#f7fbff");
gridViewRow.Cells[i].BackColor = sortColumnBgColor;
}
}
}
}
