GridView Create Fields Dynamically - asp.net

Question

I would like somebody to help me to solve the following issue.
I have a gridview, where the fields are created dynamically from codebehind.
I would like to create with the same way(dynamically) a templateField which, if it is possible, to hold in it two button controls, having also and commandName.
To be more clear:
Headers-->> First Name, LastName, Print(Daily/Invoices)
Results -->> FooFName, FooLName, Daily | Invoice
The bold one text is what I am looking for.
I am posting also the methods and the way I use them to create the fields.
CreateBoundField(BillingSummaryGV, "Book_Date", "Date", "{0:dd/MM/yyyy}");
CreateButtonField(BillingSummaryGV, "Print", "Print(Daily)", ButtonType.Link,"");
BillingSummaryGV.DataSource = billingSummaries;
BillingSummaryGV.DataBind();
protected void CreateBoundField(GridView gv, string dataField, string headerText, string arrFormatingString) {
var bf = new BoundField {
DataField = dataField,
DataFormatString = arrFormatingString,
HeaderText = headerText
};
gv.Columns.Add(bf);
}
private void CreateButtonField(GridView gv, string text, string headerText, ButtonType buttonType, string commandName) {
var bfPrint = new ButtonField() {
ButtonType = buttonType,
Text = text,
HeaderText = headerText,
Visible = true,
CommandName = commandName
};
gv.Columns.Add(bfPrint);
}
I would appreciate any reply
thanks

Answer 1

You have to create a template class that implements ITemplate. See this example from MSDN. The code below extends my answer to this question to add a template column that displays Title|Author.
Markup:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false"
OnRowCommand="GridView1_RowCommand"
OnRowEditing="GridView1_RowEditing"/>
Code:
protected void Page_Load(object sender, EventArgs e)
{
BindGridView();
}
private DataTable GetBooksDataTable()
{
var dt = new DataTable();
dt.Columns.Add("ID", typeof(int));
dt.Columns.Add("Title", typeof(string));
dt.Columns.Add("Author", typeof(string));
for (int index = 0; index < 10; index++)
{
dt.Rows.Add(index, "Title" + index, "Author" + index);
}
return dt;
}
private void BindGridView()
{
var dt = GetBooksDataTable();
GridView1.Columns.Clear();
GridView1.ShowFooter = true;
var cf = new CommandField();
cf.HeaderText = "Action";
cf.ShowEditButton = true;
GridView1.Columns.Add(cf);
for (int index = 0; index < dt.Columns.Count; index++)
{
var boundField = new BoundField();
boundField.DataField = dt.Columns[index].ColumnName;
boundField.HeaderText = dt.Columns[index].ColumnName;
GridView1.Columns.Add(boundField);
}
CreateCustomTemplateField(GridView1, "Title|Author");
GridView1.DataSource = dt;
GridView1.DataBind();
var footer = GridView1.FooterRow;
var b = new LinkButton();
b.Text = "Add New";
b.CommandName = "Add New";
footer.Cells[0].Controls.Add(b);
for (int index = 1; index < dt.Columns.Count + 1; index++)
{
var tb = new TextBox();
footer.Cells[index].Controls.Add(tb);
}
}
private void CreateCustomTemplateField(GridView gv, string headerText)
{
var customField = new TemplateField();
customField.HeaderTemplate = new CustomTemplate(DataControlRowType.Header, headerText);
customField.ItemTemplate = new CustomTemplate(DataControlRowType.DataRow, headerText);
gv.Columns.Add(customField);
}
public class CustomTemplate : ITemplate
{
private DataControlRowType _rowType;
private string _headerText;
public CustomTemplate(DataControlRowType rowType, string headerText)
{
_rowType = rowType;
_headerText = headerText;
}
public void InstantiateIn(Control container)
{
switch (_rowType)
{
case DataControlRowType.Header:
var header = new Literal();
header.Text = _headerText;
container.Controls.Add(header);
break;
case DataControlRowType.DataRow:
var data = new Literal();
data.DataBinding += DataRowLiteral_DataBinding;
container.Controls.Add(data);
break;
}
}
private void DataRowLiteral_DataBinding(object sender, EventArgs e)
{
var data = (Literal)sender;
var row = (GridViewRow)data.NamingContainer;
data.Text = DataBinder.Eval(row.DataItem, "Title") + "|" + DataBinder.Eval(row.DataItem, "Author");
}
}
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
Literal1.Text = e.CommandName;
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
Literal1.Text = "Editing row index " + e.NewEditIndex.ToString();
}