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SelectedRows and Auto Row Height

26 Answers 761 Views

GridView

This is a migrated thread and some comments may be shown as answers.

26 Answers, 1 is accepted

answered on 25 Jan 2008, 01:34 PM

Hi Jim Moore,

Yes, this is a good suggestion. Indeed, it will affect the performance of RadGridView in general. You can insert a Label control in RadGridView's cell using the CellFormatting event.

Please refer to the following code snippet:

    
            void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e) 
        
            { 
        
                if (e.CellElement.ColumnInfo is GridViewTextBoxColumn && 
        
                ((GridViewTextBoxColumn)e.CellElement.ColumnInfo).DataField == "Name") 
        
                { 
        
                if (e.CellElement.Children.Count == 0) 
        
                { 
        
                    Label label = new Label(); 
        
                    label.Text = e.CellElement.Value.ToString(); 
        
                    label.ForeColor = Color.Black; 
        
                    RadHostItem item = new RadHostItem(label); 
        
                    e.CellElement.Children.Add(item); 
        
                    e.CellElement.ForeColor = Color.Transparent; 
        
                } 
        
                else 
        
                { 
        
                    Label label = (Label)((RadHostItem)e.CellElement.Children[0]).HostedControl; 
        
                    label.ForeColor = Color.Black; 
        
                    label.Text = e.CellElement.Value.ToString(); 
        
                } 
        
                } 
        
            }

Please tell us if this solves the issue. We will be glad to help you further.

Best wishes,
Jack
the Telerik team

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answered on 16 Sep 2008, 09:53 AM

Hi Rick Hewitt,

Thank you for contacting us.

I confirm that currently there is a problem related to the RowAutoSize feature. We are aware of it and we plan to address it in our upcoming releases.

To work around the problem I suggest creating custom cells and overriding the MeasureOverride method. The code below demonstrates this behavior:

    
            void radGridView1_CreateCell(object sender, GridViewCreateCellEventArgs e) 
        
            { 
        
                if (e.CellType == typeof(GridDataCellElement) && e.Row is GridDataRowElement) 
        
                { 
        
                    e.CellType = typeof(MyCell); 
        
                } 
        
            } 
        
            public class MyCell : GridDataCellElement 
        
            { 
        
                public MyCell(GridViewColumn column, GridRowElement row) 
        
                    : base(column, row) 
        
                { 
        
                } 
        
                protected override SizeF MeasureOverride(SizeF availableSize) 
        
                { 
        
                    SizeF size = SizeF.Empty; 
        
                    using (Graphics g = this.ElementTree.Control.CreateGraphics()) 
        
                    { 
        
                        size = g.MeasureString(this.Text, this.Font, 0, this.PaintTextFormat); 
        
                    } 
        
                    size.Width = this.ColumnInfo.GetActualWidth(); 
        
                    size.Height += 30; 
        
                    return size; 
        
                } 
        
            }

I hope this helps. Do not hesitate to write me if you need further assistance.

Kind regards,
Jack
the Telerik team

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answered on 07 Oct 2008, 07:07 AM

Jack,

Your workaround does not work very well because the width passed to MeasureString is 0, so MeasureString always returns a height for one line.

I modified this workaround as follows: (Also note the easier to use static CreateCellHandler)

    
            class FixedGridDataCellElement : GridDataCellElement {  
        
                public static void CreateCellHandler(object sender, GridViewCreateCellEventArgs e) {  
        
                    if (e.CellType == typeof(GridDataCellElement) && e.Row is GridDataRowElement) {  
        
                        e.CellType = typeof(FixedGridDataCellElement);  
        
                    }  
        
                }  
        
                public FixedGridDataCellElement(GridViewColumn column, GridRowElement row)  
        
                    : base(column, row) {  
        
                }  
        
                protected override SizeF MeasureOverride(SizeF availableSize) {  
        
                    SizeF size = SizeF.Empty;  
        
                    using (Graphics g = this.ElementTree.Control.CreateGraphics()) {  
        
                        size = g.MeasureString(this.Text, this.Font, this.ColumnInfo.GetActualWidth(), this.PaintTextFormat);  
        
                    }  
        
                    size.Width = this.ColumnInfo.GetActualWidth();  
        
                    return size;  
        
                }  
        
            }

answered on 22 Jan 2009, 06:01 PM

Hi Geoff,

I apologize for this inconvenience. Not all cases involving the AutoSizeRows property were resolved in this release. You should use custom row elements to work around the issue. Here is the code:

    
            void radGridView1_CreateRow(object sender, GridViewCreateRowEventArgs e) 
        
            { 
        
                if (e.RowType == typeof(GridDataRowElement)) 
        
                { 
        
                    e.RowElement = new MyRow(); 
        
                }             
        
            } 
        
            public class MyRow: GridDataRowElement 
        
            { 
        
                protected override Type ThemeEffectiveType 
        
                { 
        
                    get 
        
                    { 
        
                        return typeof(GridDataRowElement); 
        
                    } 
        
                } 
        
                public override void Initialize(GridViewRowInfo rowInfo) 
        
                { 
        
                    base.Initialize(rowInfo); 
        
                    foreach (GridCellElement cell in this.Children) 
        
                    { 
        
                        cell.InvalidateMeasure(); 
        
                    } 
        
                    this.InvalidateMeasure(); 
        
                } 
        
            }

The issue will be fully addressed in our next major release - Q1 2009. Of course, you should also set the AutoSizeRows to true.

In case you need further assistance, do not hesitate to contact us.

All the best,
Jack
the Telerik team

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answered on 31 Mar 2014, 09:53 AM

Hello Arslan,

Thank you for contacting us.

Can you please elaborate what problem are you experiencing exactly since I was not able to understand that from the currently provided information. If you want to AutoSize your rows and columns you will need to set the AutoSizeRows property of RadGridView and WrapText to the column at hand:

this.Grid.Columns.Add("");

this.Grid.Rows.Add(new string('a', 600));

this.Grid.Columns.First().WrapText = true;

this.Grid.AutoSizeRows = true;

Keep in mind that you may experience the mentioned scroll behavior will occur. The behavior at hand is expressed in a changing scroll bar value which is due to the fact that a cell is measured when it becomes visible. We are aware of this behavior, however currently it cannot be changed.

Looking forward to your response.

Regards,
George
Telerik

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answered on 04 Apr 2014, 11:33 AM

account-log.jpg

Thanks George you replied my,
I have found same code form an other form and my issue resolved.as you wrote in your post ...Now i have an other issue with same grid and same column.Issue is that i want to add a command button in this cell that showing me Log Notes when user click on button a popup appears and show me detail.but I am unaware that how i add this button ?
Like "Edit button"