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How to make gridboundcolumn readonly on griddropdowncolumn selection

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Kevin
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Kevin asked on 08 Jan 2010, 08:05 PM
Hello,

I had a scenario where I have to make a gridboundcolumn editable based on griddropdowncolumn selection. I am able to fire the selectindexchanged event for the griddropdowncolumn but could not figure how to change the readonly property of a column in the event.

Any help would be greatly appreciated.

Thanks,
Kevin

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Shinu
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answered on 11 Jan 2010, 12:08 PM
Hello Kevin,

Try the following code snippet in order to set the ReadOnly property based on dropdown selection changed.

CS:
 
protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e) 
    { 
        if (e.Item is GridEditableItem && e.Item.IsInEditMode) 
        { 
            GridEditableItem item = e.Item as GridEditableItem; 
            RadComboBox combo = (RadComboBox)item["dropdowncolumnUniqueName"].Controls[0]; 
            combo.AutoPostBack = true
            combo.SelectedIndexChanged += new RadComboBoxSelectedIndexChangedEventHandler(combo_SelectedIndexChanged); 
        } 
    } 
 
    void combo_SelectedIndexChanged(object o, RadComboBoxSelectedIndexChangedEventArgs e) 
    { 
        (RadGrid1.MasterTableView.GetColumn("BoundcolumnUniquName"as GridBoundColumn).ReadOnly = true
        RadGrid1.MasterTableView.Rebind();         
    } 

-Shinu.
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Kevin
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answered on 11 Jan 2010, 03:15 PM
thanks for the reply shinu, it worked

thank you

--
Kevin
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Lucas
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answered on 30 Jul 2014, 05:58 AM
Shinu,

Thanks for your post, this hasn't worked for me though. Running this thru debug it looks like it works, but yet the fields are still available within the edit screen when the page reloads.

Can you please let me know where I may be going wrong.

Code as below.

Thanks
Lucas

protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
{
if ((e.Item is GridEditableItem) && (e.Item.IsInEditMode))
{
GridEditableItem edititem = (GridEditableItem)e.Item;

RadComboBox RadCombo = (RadComboBox)edititem["qt_factoryReq"].Controls[0];
RadCombo.AutoPostBack = true;
RadCombo.SelectedIndexChanged += new RadComboBoxSelectedIndexChangedEventHandler(RadCombo_SelectedIndexChanged);
}
}

void RadCombo_SelectedIndexChanged(object sender, RadComboBoxSelectedIndexChangedEventArgs e)
{
GridEditableItem editedItem = (sender as RadComboBox).NamingContainer as GridEditableItem;
RadComboBox radCombo = (RadComboBox)editedItem["qt_factoryReq"].Controls[0];

if (radCombo.SelectedValue == "Y")
{
(RadGrid1.MasterTableView.GetColumn("qt_factory") as GridBoundColumn).ReadOnly = true;
}
}
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Shinu
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answered on 30 Jul 2014, 06:42 AM
Hi Lucas,

Please try rebinding the RadGrid as shown below.

C#:
protected void  RadCombo_SelectedIndexChanged(object sender, RadComboBoxSelectedIndexChangedEventArgs e)
    {
        RadComboBox selectComboBox=(RadComboBox)sender;
        GridEditableItem editedItem = selectComboBox.NamingContainer as GridEditableItem;
        if (selectComboBox.SelectedValue == "Y")
        {
            (RadGrid1.MasterTableView.GetColumn("qt_factory") as GridBoundColumn).ReadOnly = true;
        }
        RadGrid1.MasterTableView.Rebind();
    }

Thanks,
Shinu.
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Lucas
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answered on 30 Jul 2014, 08:09 AM
Shinu,

Sorry I should have included in the previous post that rebinding the page causes the fields to go back to their default values (i.e. blank). This also does not change the read only properties for the necessary fields on the grid.

Please let me know what else I can do.

thanks
Lucas
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Shinu
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answered on 31 Jul 2014, 05:21 AM
Hi Lucas,

One suggestion is to access the TextBox in edit mode and disable or hide it on SelectedIndexChanged event. Please try the following code snippet

C#:
protected void  RadCombo_SelectedIndexChanged(object sender, RadComboBoxSelectedIndexChangedEventArgs e)
    {
        RadComboBox selectComboBox=(RadComboBox)sender;
        GridEditableItem editedItem = selectComboBox.NamingContainer as GridEditableItem;
        if (selectComboBox.SelectedValue == "Y")
        {     
            TextBox txtBox = (TextBox)editedItem["qt_factory"].Controls[0];
            txtBox.Visible = false;// hide the textbox
            txtBox.Parent.Parent.Visible = false; //hide the header text
             
            //OR
     
            txtBox.Enabled = false;//disable the textbox
        }
    }

Thanks,
Shinu.
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Kevin
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Lucas
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