Добрый день. У меня стала задача - создать кастом контрол с возможностью генерировать разное кол-во гридвьювов. На вход которого я буду передовать Dictionary<string, HostLog[]>, где HostLog - массив некоторого класса, по которому будет идти биндинг каждой из гридвью Вот код моего DataControlField (в нем я тоже пытался отловить нажатие по linkButton: ф-ция linkButton_Click) | Код |
public class LinkTemplateField : DataControlField
{
public const string CommandName = "Redirect";
public string LinkText
{
get
{
object value = base.ViewState["LinkText"];
if (value != null)
{
return value.ToString();
}
else
{
return "";
}
}
set
{
base.ViewState["LinkText"] = value;
this.OnFieldChanged();
}
}
public string LinkCommandArgument
{
get
{
object value = base.ViewState["LinkCommandArgument"];
if (value != null)
{
return value.ToString();
}
else
{
return "";
}
}
set
{
base.ViewState["LinkCommandArgument"] = value;
this.OnFieldChanged();
}
}
protected override DataControlField CreateField()
{
return new BoundField();
}
public override void InitializeCell(DataControlFieldCell cell, DataControlCellType cellType, DataControlRowState rowState, int rowIndex)
{
//Call the base method.
base.InitializeCell(cell, cellType, rowState, rowIndex);
switch (cellType)
{
case DataControlCellType.DataCell:
this.InitializeDataCell(cell, rowState);
break;
/*case DataControlCellType.Footer:
this.InitializeFooterCell(cell, rowState);
break;*/
case DataControlCellType.Header:
this.InitializeHeaderCell(cell, rowState);
break;
}
}
protected void InitializeDataCell(DataControlFieldCell cell, DataControlRowState rowState)
{
string ID = Guid.NewGuid().ToString();
LinkButton linkButton = new LinkButton();
linkButton.ID = ID;
linkButton.Click += new EventHandler(linkButton_Click);
linkButton.DataBinding += new EventHandler(linkButton_DataBinding);
cell.Controls.Add(linkButton);
}
void linkButton_Click(object sender, EventArgs e)
{
object sender1 = sender;
//throw new Exception("The method or operation is not implemented.");
}
protected void InitializeHeaderCell(DataControlFieldCell cell, DataControlRowState rowState)
{
Label lbl = new Label();
lbl.Text = "<b>File Name</b>";
cell.Controls.Add(lbl);
}
protected void linkButton_DataBinding(object sender, EventArgs e)
{
// get a reference to the control that raised the event
LinkButton linkButton = (LinkButton)sender;
Control container = (GridViewRow)linkButton.NamingContainer;
linkButton.Click += new EventHandler(linkButton_Click);
// get a reference to the row object
object dataItem = DataBinder.GetDataItem(container);
// get the row's value for the named data field only use Eval when it is neccessary
// to access child object values, otherwise use GetPropertyValue. GetPropertyValue
// is faster because it does not use reflection
object dataFieldValueLinkText = null;
object dataFieldValueLinkCommandArgument = null;
dataFieldValueLinkText = this.LinkText.Contains(".") ? DataBinder.Eval(dataItem, this.LinkText) : DataBinder.GetPropertyValue(dataItem, this.LinkText);
dataFieldValueLinkCommandArgument = this.LinkText.Contains(".") ? DataBinder.Eval(dataItem, this.LinkCommandArgument) : DataBinder.GetPropertyValue(dataItem, this.LinkCommandArgument);
linkButton.CommandName = CommandName;
if (dataFieldValueLinkText != null)
{
linkButton.Text = dataFieldValueLinkText.ToString();
}
if (dataFieldValueLinkCommandArgument != null)
{
linkButton.CommandArgument = dataFieldValueLinkCommandArgument.ToString();
}
}
}
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Вот код моего кастом контролла | Код |
public class SystemLogsControl : WebControl
{
private static readonly ILog log = LogManager.GetLogger(typeof(AdvancedGridView).Name); //obtaining logger
public Dictionary<string, HostLog[]> LogsFromAgentHostMachines
{
get
{
return ViewState["LogsFromAgentHostMachines"] as Dictionary<string, HostLog[]>;
}
set
{
ViewState["LogsFromAgentHostMachines"] = value;
}
}
public HttpResponse Response;
public string LinkText
{
get
{
object o = ViewState["LinkText"];
return ((o == null) ? string.Empty : (string)o);
}
set
{
ViewState["LinkText"] = value;
}
}
public string LinkCommandArgument
{
get
{
object o = ViewState["LinkCommandArgument"];
return ((o == null) ? string.Empty : (string)o);
}
set
{
ViewState["LinkCommandArgument"] = value;
}
}
private void CreateAdvancedGridViews(Dictionary<string, HostLog[]> agentHostLogs)
{
if (agentHostLogs != null && agentHostLogs.Count > 0)
{
Table table;
TableRow tableRow;
TableCell tableCell;
LinkTemplateField linkTemplateField;
BoundField boundField;
GridView advancedGridView;
Controls.Clear();
LinkText = HostLog.bindingField_FileName;
LinkCommandArgument = HostLog.bindingField_FileName;
foreach (KeyValuePair<string, HostLog[]> log in agentHostLogs)
{
table = new Table();
table.CellSpacing = 2;
table.CellPadding = 2;
table.BorderWidth = new Unit("0");
table.Width = new Unit("100%");
tableRow = new TableRow();
tableCell = new TableCell();
tableCell.Height = new Unit("25px");
tableCell.CssClass = "headerBg2";
tableCell.ColumnSpan = 2;
tableCell.Text = string.Format("<b>Agent Host ({0}) Log Files</b>", log.Key);
tableRow.Cells.Add(tableCell);
table.Rows.Add(tableRow);
tableRow = new TableRow();
tableCell = new TableCell();
tableRow.VerticalAlign = VerticalAlign.Top;
tableCell.Width = new Unit("100%");
advancedGridView = new GridView();
advancedGridView.ID = log.Key;
advancedGridView.AutoGenerateColumns = false;
advancedGridView.SkinID = "AdvancedDataGrid";
advancedGridView.Width = new Unit("95%");
advancedGridView.Init += new EventHandler(advancedGridView_Init);
advancedGridView.Load += new EventHandler(advancedGridView_Load);
advancedGridView.RowCommand += new GridViewCommandEventHandler(advancedGridView_RowCommand);
advancedGridView.HeaderStyle.CssClass = "gridHeader";
advancedGridView.CssClass = "grid";
advancedGridView.HeaderStyle.HorizontalAlign = HorizontalAlign.Left;
advancedGridView.HeaderStyle.Height = new Unit("18px");
advancedGridView.RowStyle.Height = new Unit("18px");
linkTemplateField = new LinkTemplateField();
linkTemplateField.LinkText = LinkText;
linkTemplateField.LinkCommandArgument = LinkCommandArgument;
advancedGridView.Columns.Add(linkTemplateField);
boundField = new BoundField();
boundField.DataField = HostLog.bindingField_LastModified;
boundField.HeaderText = "<b>Last Modified</b>";
boundField.HtmlEncode = false;
advancedGridView.Columns.Add(boundField);
tableCell.Controls.Add(advancedGridView);
tableRow.Cells.Add(tableCell);
table.Rows.Add(tableRow);
Controls.Add(table);
advancedGridView.DataSource = log.Value;
advancedGridView.DataBind();
}
}
}
void advancedGridView_Init(object sender, EventArgs e)
{
//этот эвен возникает
//throw new Exception("The method or operation is not implemented.");
}
void advancedGridView_RowCommand(object sender, GridViewCommandEventArgs e)
{
//этот эвен НЕ возникает
//throw new Exception("The method or operation is not implemented.");
}
void advancedGridView_Load(object sender, EventArgs e)
{
//этот эвен возникает
//throw new Exception("The method or operation is not implemented.");
}
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ASP.NET Custom GridView в нейсвой DataControlField, не отлавливается event RowCommand 
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