Solved

Make web form datagrid column read only

Posted on 2003-12-06
2
365 Views
Last Modified: 2012-06-27
I have done this before but I can't remember how you make columns read only.  

For example, my datagrid looks like this:

Name    ID     Time In     Time Out
joe        4      10:00 AM   11:00 PM
jane      5      9:30 AM     12:00 PM

When I go to the edit mode, I don't want the user to be able to edit the Name column or the ID column.  Thanks in advance
0
Comment
Question by:djhoen
2 Comments
 
LVL 2

Expert Comment

by:smitty22
ID: 9889175
I believe you can use the DataGridColumnStyle.ReadOnly property.
0
 
LVL 7

Accepted Solution

by:
TransBind earned 100 total points
ID: 9889332
The way to make a column read-only is to make the property you're binding to
read-only (i.e. remove its set accessor). However, this will cause problems
if the property is set when you populate the grid in the first place. One
effective way round this (though I'm not sure it's good practice) is to
increase the accessibility of the private field behind the property to
internal, so you can set this directly within your assembly.

The following example sets the DataGridColumnStyle object's ReadOnly property to the same value as the DataColumn object's ReadOnly property.

[Visual Basic]
Private Sub SetReadOnly()
    Dim myColumn As DataGridColumnStyle
    Dim myDataColumns As DataColumnCollection
    ' Get the columns for a table bound to a DataGrid.
    myDataColumns = dataSet1.Tables("Suppliers").Columns
    Dim dataColumn As DataColumn
    For Each dataColumn In myDataColumns
        dataGrid1.TableStyles(0).GridColumnStyles(dataColumn.ColumnName).ReadOnly = dataColumn.ReadOnly
    Next dataColumn
End Sub 'SetReadOnly

[C#]
private void SetReadOnly()
{
    DataColumnCollection myDataColumns;
    // Get the columns for a table bound to a DataGrid.
    myDataColumns = dataSet1.Tables["Suppliers"].Columns;
    foreach(DataColumn dataColumn in myDataColumns)
    {
        dataGrid1.TableStyles[0].GridColumnStyles[dataColumn.ColumnName].ReadOnly = dataColumn.ReadOnly;
    }
}

0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Article by: Najam
Having new technologies does not mean they will completely replace old components.  Recently I had to create WCF that will be called by VB6 component.  Here I will describe what steps one should follow while doing so, please feel free to post any qu…
Introduction This article series is supposed to shed some light on the use of IDisposable and objects that inherit from it. In essence, a more apt title for this article would be: using (IDisposable) {}. I’m just not sure how many people would ge…
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.

856 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question