Also quick question: What if the hyperlinks are on 3rd level?(grandchild)?

In that case as soon as I click teh hyperlink and then try to sort any column it gives object reference error at databinding

Hi dev_here,

Is it possible to provide a sample reproducing this error, or modify the sample I attached in my previous post to demonstrate the issue. Thank you.

Hello dev_here,

If you still need assistance with the matter, please feel free to contact me.

protected DataTable MyGridChildDt(int myId, int userid)        

 {             DataAccess.ReportsDB db = new DataAccess.ReportsDB();            

DataSet childDs = new DataSet();            

DataTable dt = db.GetIPs(myId, this.UserId);            

 childDs.Tables.Add(dt);            

childDs.Tables[0].TableName = "Child";

            return childDs.Tables[0];        

}        

protected DataTable MyGridGrandChildDt(int myId, int userid,string classType)        

{             DataAccess.ReportsDB db = new DataAccess.ReportsDB();            

 DataSet childDs = new DataSet();            

DataTable dt = db.GetIPDetails(myId, this.UserId,  classTypes);            

childDs.Tables.Add(dt);            

childDs.Tables[0].TableName = "GChild";

            return childDs.Tables[0];        

}        

 protected void MyGrid_RowIslandsPopulating(object sender, Infragistics.Web.UI.GridControls.ContainerRowCancelEventArgs e)        

 {             //Cancel the default automatic load on demand operation            

e.Cancel = true;            

switch (e.Row.Level)            

{                

case 0:                     BindSecondLevel(e);                    

break;                

 case 1:                     BindThirdLevel(e);                    

break;            

}       

  }        

 private void BindSecondLevel(Infragistics.Web.UI.GridControls.ContainerRowCancelEventArgs e)        

 {             //Cancel the default automatic load on demand operation            

 e.Cancel = true;

            int myId = Int32.Parse(e.Row.Items.FindItemByKey("myIdColumn").Value.ToString());            

// Create Container Grid            

ContainerGrid childGrid = new ContainerGrid();            

e.Row.RowIslands.Add(childGrid);

            // Bind Grid            

 childGrid.AutoGenerateColumns = false;            

 childGrid.DataKeyFields = "ROW";            

childGrid.Level = 1;

            BoundDataField iprow = new BoundDataField();            

 iprow.DataFieldName = "ROW";            

iprow.Key = "IPROWColumn";            

 iprow.Header.Text = "ROW";           

  iprow.Hidden = true;

            BoundDataField classification = new BoundDataField();            

 classification.DataFieldName = "Classification";            

 classification.Key = "ClassificationColumn";            

classification.Hidden = true;            

classification.Header.Text = "Classification";

            BoundDataField myId = new BoundDataField();            

 myId.DataFieldName = "myId";            

myId.Key = "myIdColumn";            

myId.Hidden = true;            

myId.Header.Text = "myId";

                    BoundDataField high = new BoundDataField();            

high.DataFieldName = "High";            

 high.Key = "HighColumn";            

high.Width = Unit.Pixel(60);            

high.Header.Text = "High";            

high.CssClass = "RiskColumnCssClass";

            BoundDataField medium = new BoundDataField();            

medium.DataFieldName = "Medium";            

medium.Key = "MediumColumn";            

medium.Width = Unit.Pixel(60);            

medium.Header.Text = "Medium";            

 medium.CssClass = "RiskColumnCssClass";

    

            childGrid.Columns.Add(iprow);            

 childGrid.Columns.Add(high);             childGrid.Columns.Add(medium);            

childGrid.Columns.Add(myId);            

childGrid.Columns.Add(classification);

 

            childGrid.Behaviors.CreateBehavior<Sorting>();            

 childGrid.Behaviors.Sorting.Enabled = true;            

 childGrid.Behaviors.Sorting.SortedColumns.Add("IPAddressColumn", Infragistics.Web.UI.SortDirection.Descending);             childGrid.Behaviors.CreateBehavior<Infragistics.Web.UI.GridControls.Paging>();            

 childGrid.Behaviors.Paging.Enabled = true;            

 childGrid.Behaviors.Paging.PagerMode = Infragistics.Web.UI.GridControls.PagerMode.NumericFirstLast;            

childGrid.Behaviors.Paging.PageSize = 15;            

 childGrid.Behaviors.CreateBehavior<Infragistics.Web.UI.GridControls.Filtering>();            

 childGrid.Behaviors.Filtering.Enabled = true;        

}        

private void BindThirdLevel(Infragistics.Web.UI.GridControls.ContainerRowCancelEventArgs e)        

{             //Cancel the default automatic load on demand operation            

 e.Cancel = true;            

if (e.Row.RowIslands.Count == 0)            

{                 int myId = Int32.Parse(e.Row.Items.FindItemByKey("myIdColumn").Value.ToString());                

 string classification= e.Row.Items.FindItemByKey("ClassificationColumn").Value.ToString();                

// Create Container Grid                

ContainerGrid childGrid = new ContainerGrid();                

 e.Row.RowIslands.Add(childGrid);

                // Bind Grid                

childGrid.AutoGenerateColumns = false;                

childGrid.DataKeyFields = "ExpID";                

childGrid.Level = 2;

                BoundDataField exposureid = new BoundDataField();                

expid.DataFieldName = "ExpID";                

expid.Key = "ExpIDColumn";                

 expid.Header.Text = "Id";                

 expid.Hidden = true;

                BoundDataField risk = new BoundDataField();                

risk.DataFieldName = "RiskFactorText";                

 risk.Key = "RiskFactorTextColumn";                

risk.Width = Unit.Pixel(80);                

risk.Header.Text = "Risk";                

risk.CssClass = "RiskColumnCssClass";

                          TemplateDataField name = new TemplateDataField();                

name.ItemTemplate = new ActionChildItemTemplate();                

name.Key = "NameColumn";                

name.Header.Text = "Name";

                BoundDataField namehidden = new BoundDataField();                

namehidden.DataFieldName = "name";              

   namehidden.Key = "NameColumnHidden";                

namehidden.Header.Text = "NameColumn";                

namehidden.Hidden = true;

                childGrid.Columns.Add(risk);                

childGrid.Columns.Add(expid);                

childGrid.Columns.Add(name);              

   childGrid.Columns.Add(namehidden);

                childGrid.Behaviors.CreateBehavior<Sorting>();                

childGrid.Behaviors.Sorting.Enabled = true;               

  //childGrid.Behaviors.Sorting.SortedColumns.Add("RiskFactorTextColumn", Infragistics.Web.UI.SortDirection.Descending);                 childGrid.Behaviors.CreateBehavior<Infragistics.Web.UI.GridControls.Paging>();             

    childGrid.Behaviors.Paging.Enabled = true;                

 //childGrid.Behaviors.Paging.PagerMode = Infragistics.Web.UI.GridControls.PagerMode.NumericFirstLast;                

 //childGrid.Behaviors.Paging.PageSize = 15;                

 childGrid.Behaviors.CreateBehavior<Infragistics.Web.UI.GridControls.Filtering>();                

 childGrid.Behaviors.Filtering.Enabled = true;            

 }             else             {                

 e.Row.RowIslands[0].AutoGenerateColumns = false;

                TemplateDataField name = new TemplateDataField();                

 name.ItemTemplate = new ActionChildItemTemplate();                

name.Key = "nameColumn";               

  name.Header.Text = "Exposure";                

if (e.Row.RowIslands[0].Columns.FromKey("nameColumn") == null)                

 {                     e.Row.RowIslands[0].Columns.Add(name);                

}                

else                 {                    

(e.Row.RowIslands[0].Columns["nameColumn"] as TemplateDataField).ItemTemplate = new ActionChildItemTemplate();                

}

                BoundDataField namehidden = new BoundDataField();                

namehidden.DataFieldName = "name";                

namehidden.Key = "nameColumnHidden";                

namehidden.Header.Text = "Exposure";                

namehidden.Hidden = true;                

 if (e.Row.RowIslands[0].Columns.FromKey("nameColumnHidden") == null)                

 {                     e.Row.RowIslands[0].Columns.Add(namehidden);                 }

                e.Row.RowIslands[0].DataKeyFields = "ExpID";

                e.Row.RowIslands[0].Behaviors.Sorting.Enabled = true;                

e.Row.RowIslands[0].Behaviors.Paging.Enabled = true;                

 e.Row.RowIslands[0].Behaviors.Filtering.Enabled = true;            

 }        

 }        

public class ActionChildItemTemplate : ITemplate        

{             #region ITemplate Member            

public void InstantiateIn(Control container)            

 {                 HyperLink link = new HyperLink();                

link.ID = "explink";                

link.ForeColor = Color.Blue;                

link.Text = ((DataRowView)(((TemplateContainer)container).DataItem)).Row["name"].ToString();                

 container.Controls.Add(link);            

}            

#endregion        

}

 

        protected void MyGrid_RowIslandDataBinding(object sender, RowIslandEventArgs e)        

{            

if (e.RowIsland.Level == 1)           

  {                

 int myId = Int32.Parse(e.RowIsland.ParentRow.Items.FindItemByKey("myIdColumn").Value.ToString());                

 string classType = e.RowIsland.ParentRow.Items.FindItemByKey("ClassificationColumn").Value.ToString();                

e.RowIsland.DataKeyFields = "IPROW";             

    e.RowIsland.DataSource = this.MyGridChildDt(myId, this.UserId);       

      }           

  if (e.RowIsland.Level == 2)            

{                 int myId = Int32.Parse(e.RowIsland.ParentRow.Items.FindItemByKey("myIdColumn").Value.ToString());                

 string classType = e.RowIsland.ParentRow.Items.FindItemByKey("ClassificationColumn").Value.ToString();             

    e.RowIsland.DataKeyFields = "ExpID";                

 e.RowIsland.DataSource = this.MyGridGrandChildDt(myId, this.UserId,classType);          

   }      

   }      

   protected void MyGrid_InitializeRow(object sender, Infragistics.Web.UI.GridControls.RowEventArgs e)       

  {             if (((ContainerGridRecord)e.Row).Level < 2)              

   ((ContainerGridRecord)e.Row).IsEmptyParent = true;

            if (e.Row.Items.Grid.DataKeyFields == "ExpID")            

 {              

   //format the name cell and set hyperlink               

  int exposureId = Int32.Parse(e.Row.Items.FindItemByKey("ExpIDColumn").Value.ToString().ToLower());         

        //set  name detail hyperlink         

        string pageName = "ReportsDetailsPage.aspx";           

      string refLink = CriticalWatch.HttpUrlBuilder.BuildUrl("" + "&ExposureId=" + exposureId);      

           var hprlink = ((HyperLink)e.Row.Items.FindItemByKey("nameColumn").FindControl("explink"));          

       if (hprlink != null)                

 {                 

    hprlink.NavigateUrl = "BLOCKED SCRIPTopenPopupWindow('" + refLink + "','newwin',500,500,'yes');";            

     }                 string riskFactor = e.Row.Items.FindItemByKey("RiskFactorTextColumn").Value.ToString();         

        System.Drawing.Color riskColor = Color.Black;

                switch (riskFactor.ToLower())                 {

                    case "high":                        

 riskColor = Color.Red;                  

       e.Row.Items.FindItemByKey("RiskFactorTextColumn").CssClass = "RiskColumnCssClassRed";   

                      break;                 

 

    case "medium":                 

        riskColor = Color.Orange;                  

       e.Row.Items.FindItemByKey("RiskFactorTextColumn").CssClass = "RiskColumnCssClassOrange";       

                  break;                 

                      default:                      

   riskColor = Color.Black;                    

     e.Row.Items.FindItemByKey("RiskFactorTextColumn").CssClass = "RiskColumnCssClassBlack";     

                    break;             

    }           

  }      

   }

Hello,

I am attaching the previously attached sample modified with third level sorting. 

Let me know if you have any questions.

Hi dev_here,

I'm just checking if you have resolved your issue.