Some question on GrideView

[Ray Wang]

Hello Telerik

We have two questions in Grideview

1:Can we add two different control in one cell of Grideview?
   we want to add a progress bar and corresponding text in one cell,please see attached
If Grideview can't do that, do you know if tehre is any other control can realize this?

2: Our GridView :when we want to add a item in sub-table, and datasource has been update(we can find the new item in datasource), but this new item didn't show in sub-table

BTW, How to change the color of current selected row (Default is orange, we want to change to Gray)

[Svett]

Hi Ray Wang,

To create several controls in a grid cell, you should do the following steps:

1. Create a custom cell derived from GridDataCellElement

   1.1 First, create a class that inherits from GridDataCellElement
   

public class   CustomProgressCell : GridDataCellElement
{
        public CustomInfoCell(GridViewColumn column, GridRowElement row)
            : base(column, row)
        {
        }
}

   1.2 Add the elements that you want to show in the cell as members of CustomProgressCell class
     

private StackLayoutPanel panel;
private RadLabelElement label;
private RadProgressBarElement progressBar;

  1.3 To add the elements in the cell you should override CreateChildElements method.
  

protected override void CreateChildElements()
{
    base.CreateChildElements();

    this.panel = new StackLayoutPanel();
    this.panel.Margin = new System.Windows.Forms.Padding(5);
    this.panel.Orientation = System.Windows.Forms.Orientation.Vertical;

    this.label = new RadLabelElement();
    this.label.TextAlignment = ContentAlignment.MiddleCenter;
    this.panel.Children.Add(this.label);

    this.progressBar = new RadProgressBarElement();
    this.progressBar.MinSize = new Size(0, 20);
    this.panel.Children.Add(this.progressBar);

    this.Children.Add(this.panel);
}

  
1.4 Also you should override SetContentCore method to support initialization of the cell value with the value of its elements.
  

protected override void SetContentCore(object value)
{
    object cellValue = value;

    if (cellValue is DBNull || cellValue == null)
        cellValue = 0;

    this.progressBar.Value1 = (int)cellValue;
    this.label.Text = "Value: " + cellValue.ToString();
}

  2. We finished our work on the custom cell element, but now we should associate the cells of the Progress Column with this custom cell type. In order to do so, handle the CreateCell event which is called once for each cell when RadGridView is shown for the first time. When this event is fired for the cells of ProgressColumn, we set the CellType property of the GridViewCreateCellEventArgs to our custom cell type:

private void radGridView1_CreateCell(object sender, GridViewCreateCellEventArgs e)
{
    if (e.CellType == typeof(GridDataCellElement))
    {
        GridViewDataColumn dataColumn = e.Column as GridViewDataColumn;

        if (dataColumn.UniqueName == "Progress")
        {
            e.CellType = typeof(CustomProgressCell);
        }
    }
}

3. In addition to make the look of the cell outstanding we should do the following lines in the constructor of the form:

this.radGridView1.Columns["Progress"].ReadOnly = true;
this.radGridView1.Columns["Progress"].MinWidth = 70;
this.radGridView1.GridElement.RowHeight = 50;

Presently we can not reproduce your issue with sub-tables. Could you provide us with example project?

If you have further questions, feel free to ask us.

Greetings,
Svett
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.

[Ray Wang]

Hello Telerik

Thank you very much. You always give us big help.

As to the second problem I stated :

2: Our GridView :when we want to add a item in sub-table, and datasource has been update(we can find the new item in datasource), but this new item didn't show in sub-table

May be I didn't described it clearly. This problem is not related to the first one. It is another problem. We didn't use the customer cell type here. We only use the orignal cell type. we apply each row as a folder, and sub-table show the contents of folder. We want to realize "right-click" to add a sub-folder in each row. we have already realized this using update the datasource.  (We have binded generic list). Bur our problem is the update data didn't show in sub-table imediately. but when we go to other page and load return the grideview. we can see the update data(new adding sun-folder). It seems that when we update the datasource, grideview didn't refresh the show screen.

[Ray Wang]

Below is the code we used

List<DirectorySource> entries = this.radGridView.MasterGridViewTemplate.ChildGridViewTemplates[0].DataSource as List<DirectorySource>;
                FileSystemInfo fileInfo = new DirectoryInfo(strSaveFilePath);
                DirectorySource newRowData = new DirectorySource(fileInfo);
                //the date added :newRowData
                newRowData.DateModified = "DateModified";
               
 this.radGridView.MasterGridViewTemplate.ChildGridViewTemplates[0].DataSource = entries;
                this.radGridView.MasterGridViewTemplate.ChildGridViewTemplates[0].Update(GridUINotifyAction.Reset);

[Svett]

Hello Ray Wang,

Presently, this is an issue in RadGridView. It will be addressed in the next version of RadControls for Winforms (Q1 2010). Your Telerik points have been updated. If you have further questions, feel free to contact us.

All the best,
Svett
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.