Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

c#, undound datagrid, header text

Posted on 2007-11-19
8
304 Views
Last Modified: 2010-04-21
how can I change the header text on an unbound datagrid that has columns dynamically generated at runtime?  I am using the attached code to create the table , but the dynamically generated columns only come up with the column name for the header.
private DataTable datbl()
		{
			DataTable tbl = new DataTable("X");
			DataColumn Coldt;
			DataRow Rowdt; 
			Coldt = new DataColumn();
			Coldt.DataType= System.Type.GetType("System.Int32");
			Coldt.ColumnName = "ID";
			Coldt.AutoIncrement = true;
			Coldt.Caption = "EMPID";
			Coldt.ReadOnly = true;
			Coldt.Unique = true;
 
			tbl.Columns.Add(Coldt);
 
			Coldt = new DataColumn();
			Coldt.DataType= System.Type.GetType("System.String");
			Coldt.ColumnName = "FName";
			Coldt.AutoIncrement = false;
			Coldt.Caption = "Employee First Name";
			Coldt.ReadOnly = false;
			Coldt.Unique = false;
			tbl.Columns.Add(Coldt);
 
			Coldt = new DataColumn();
			Coldt.DataType= System.Type.GetType("System.String");
			Coldt.ColumnName = "LName";
			Coldt.AutoIncrement = false;
			Coldt.Caption = "Employee Last Name";
			Coldt.ReadOnly = false;
			Coldt.Unique = false;
			tbl.Columns.Add(Coldt);
 
			Rowdt = tbl.NewRow();
			Rowdt["ID"] = 0001;
			Rowdt["FName"] = "Kasi";
			Rowdt["LName"] = "Viswanath" ;
			tbl.Rows.Add(Rowdt);
 
			Rowdt = tbl.NewRow();
			Rowdt["ID"] = 0002;
			Rowdt["FName"] = "Arun";
			Rowdt["LName"] = "Kumar" ;
			tbl.Rows.Add(Rowdt);
			
			Rowdt = tbl.NewRow();
			Rowdt["ID"] = 0003;
			Rowdt["FName"] = "Srivasan";
			Rowdt["LName"] = "Ramachandran" ;
			tbl.Rows.Add(Rowdt);
 
			return tbl;
 
			
		}
 
//Draw Table
bindtbl  = datbl();
Session["DataTable"] = bindtbl;
DataGrid1.DataSource = Session["DataTable"];
DataGrid1.DataBind();

Open in new window

0
Comment
Question by:soltan8
  • 5
  • 3
8 Comments
 
LVL 12

Expert Comment

by:topdog770
ID: 20313311
Here's a couple of ideas.

1) Use the designer to add unbound datacolumns to the datagridview.  Set the header text with the name(s) you are wanting and set the DataPropertyName to match the column names you set in the code above.  You'd have DataPropertyNames of ID, LName, etc

2) In your code, you can also do the same process I've layed out above.  Create Columns for the DataGridView and set the DataPropertyNames
0
 

Author Comment

by:soltan8
ID: 20313495
I probablly should have mentioned that this is .net 1.1 using VS 2003.  I don't think I have the option of using a DataGridView(At least I don't see it as an option).  If I'm wrong, please give me an example of how to use it.. Thanks
0
 
LVL 12

Expert Comment

by:topdog770
ID: 20313570
My fault, I should have scrolled down the code.


void FormatColumns()
		{
			DataGridTableStyle dgTableStyle = new DataGridTableStyle();
			dgTableStyle.MappingName = "X"; // name of data table
 
			DataGridColumnStyle dgColumnStyle = new DataGridTextBoxColumn();
			dgColumnStyle.MappingName = "ID";
			dgColumnStyle.HeaderText = "EMPID";
			dgColumnStyle.Width = 45;
			dgTableStyle.GridColumnStyles.Add(dgColumnStyle);
 
			dgColumnStyle = new DataGridTextBoxColumn();
			dgColumnStyle.MappingName = "FName";
			dgColumnStyle.HeaderText = "Employee First Name";
			dgColumnStyle.Width = 120;
			dgTableStyle.GridColumnStyles.Add(dgColumnStyle);
 
			dgColumnStyle = new DataGridTextBoxColumn();
			dgColumnStyle.MappingName = "LName";
			dgColumnStyle.HeaderText = "Employee Last Name";
			dgColumnStyle.Width = 120;
			dgTableStyle.GridColumnStyles.Add(dgColumnStyle);
 
			DataGrid1.TableStyles.Add(dgTableStyle);
		}

Open in new window

0
Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

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

 
LVL 12

Expert Comment

by:topdog770
ID: 20313578
Call or use the functionality, then do the data binding
0
 

Author Comment

by:soltan8
ID: 20313954
it is failing on DataGrid1.TableStyles.Add(dgTableStyle); This is a web form and apparently DataGrid1 does not have a TableStyles Property.  Any other ideas?
0
 
LVL 12

Accepted Solution

by:
topdog770 earned 125 total points
ID: 20314437
Sorry, I'm really slow today.

In your aspx page configure the datagrid like this

The Key is Autogeneratecolumns = false;

Then you have to add each column you want visible.  I just changed the column header text, but you can configure formatting for dates, etc here as well.
			<asp:DataGrid id="DataGrid1" style="Z-INDEX: 101; LEFT: 112px; POSITION: absolute; TOP: 200px"
				runat="server" ForeColor="#FF8080" AutoGenerateColumns=False>
				<Columns>
				             <asp:BoundColumn DataField="ID"
HeaderText="EMPID"></asp:BoundColumn>
 
                    <asp:BoundColumn DataField="FName"
HeaderText="First Name"></asp:BoundColumn>
 
                    <asp:BoundColumn DataField="LName"
HeaderText="Last Name"></asp:BoundColumn>
 
                </Columns>
				
				</asp:DataGrid>

Open in new window

0
 

Author Closing Comment

by:soltan8
ID: 31409954
Thanks so much!! That is exactly what I needed.
0
 
LVL 12

Expert Comment

by:topdog770
ID: 20315366
Thank you for the A, soltan8
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone 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…
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
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.
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

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