How to show Membership Roles in the Gridview as Columns Dynamically - asp.net

Question

I am Using Membership to define roles in Asp.net.Now as per my requirement i need to show the Roles as dynamic Columns of gridview with first two columns as fixed and rest of the columns as per the number of Roles in table but i have no idea of how to meet that as i have never worked on it before..
Here is my static gridview code in aspx page...
<asp:GridView ID="GridView1" runat="server" OnRowDataBound="GridView1_RowDataBound"
AutoGenerateColumns="False" BackColor="LightGoldenrodYellow" BorderColor="Tan"
BorderWidth="1px" CellPadding="2" ForeColor="Black" GridLines="None"
Width="477px">
<AlternatingRowStyle BackColor="PaleGoldenrod" />
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:CheckBox ID="chkhdr" runat="server" />
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="chkChild" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Username">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("col0") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Role(Admin)">
<ItemTemplate>
<asp:CheckBox ID="chkAdmin" runat="server" Checked='<%# Eval("col1") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Role(DPAO User )">
<ItemTemplate>
<asp:CheckBox ID="chkUser" runat="server" Checked='<%# Eval("col2") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Role(GeneralUser)">
<ItemTemplate>
<asp:CheckBox ID="chkgen" runat="server" Checked='<%# Eval("col3") %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
And here is the code to load grid with data...
protected void BindGridviewData()
{
var role = from MembershipUser u in Membership.GetAllUsers()
select new
{
User = u.UserName,
Role = string.Join(",", Roles.GetRolesForUser(u.UserName))
};
DataTable dTable = new DataTable();
dTable.Columns.Add("col0", typeof(string));
dTable.Columns.Add("col1", typeof(bool));
dTable.Columns.Add("col2", typeof(bool));
dTable.Columns.Add("col3", typeof(bool));
foreach (MembershipUser u in Membership.GetAllUsers())
{
DataRow dRow = dTable.NewRow();
dRow[0] = u.UserName;
string[] roles = Roles.GetRolesForUser(u.UserName);
dRow[1] = roles.Contains("Admin") ? true : false;
dRow[2] = roles.Contains("DPAO User") ? true : false;
dRow[3] = roles.Contains("GeneralUser") ? true : false;
dTable.Rows.Add(dRow);
}
GridView1.DataSource = dTable;
GridView1.DataBind();
}
In the given Grid I need first two columns as fixed and other column based on value from the Role table from membership...
Any help will be highly appreciated.Thanks in advance..

Answer 1

For dynamically Show , Update roles and Delete records try this:
ASPX:
<asp:GridView ID="GridView1" runat="server" onrowdatabound="GridView1_RowDataBound1"/></asp:GridView>
<asp:Button ID="cmdDelete" runat="server" onclick="cmdDelete_Click1" Text="Delete" />
<asp:Button ID="cmdUpdateRole" runat="server" onclick="cmdUpdateRole_Click" Text="Update Roles" />
Code behind:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindGridviewData();
}
}
protected void BindGridviewData()
{
DataTable dTable = new DataTable();
dTable.Columns.Add("Select", typeof(bool));
dTable.Columns.Add("Username", typeof(string));
dTable.Columns.Add("Role(Admin)", typeof(bool));
dTable.Columns.Add("Role(DPAO User)", typeof(bool));
dTable.Columns.Add("Role(GeneralUser)", typeof(bool));
foreach (MembershipUser u in Membership.GetAllUsers())
{
DataRow dRow = dTable.NewRow();
dRow[0] = false;
dRow[1] = u.UserName;
string[] roles = Roles.GetRolesForUser(u.UserName);
dRow[2] = roles.Contains("Admin") ? true : false;
dRow[3] = roles.Contains("DPAO User") ? true : false;
dRow[4] = roles.Contains("GeneralUser") ? true : false;
dTable.Rows.Add(dRow);
}
GridView1.DataSource = dTable;
GridView1.DataBind();
}
protected void cmdUpdateRole_Click(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
string username = row.Cells[1].Text;
CheckBox chkAdmin = (CheckBox)row.Cells[2].Controls[0];
CheckBox chkUser = (CheckBox)row.Cells[3].Controls[0];
CheckBox chkgen = (CheckBox)row.Cells[4].Controls[0];
List<string> roles=new List<string>();
if (chkAdmin.Checked)
roles.Add("Admin");
if (chkUser.Checked)
roles.Add("DPAO User");
if (chkgen.Checked)
roles.Add("GeneralUser");
if (Roles.GetRolesForUser(username).Length > 0)
{
Roles.RemoveUserFromRoles(username, Roles.GetRolesForUser(username));
}
if (roles.Count > 0)
{
Roles.AddUserToRoles(username, roles.ToArray());
}
BindGridviewData();
}
}
protected void GridView1_RowDataBound1(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
CheckBox c0 = (CheckBox)e.Row.Cells[0].Controls[0];
CheckBox c2 = (CheckBox)e.Row.Cells[2].Controls[0];
CheckBox c3 = (CheckBox)e.Row.Cells[3].Controls[0];
CheckBox c4 = (CheckBox)e.Row.Cells[4].Controls[0];
c0.Enabled=c2.Enabled =c3.Enabled=c4.Enabled= true;
}
}
protected void cmdDelete_Click1(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
CheckBox chk = (CheckBox)row.Cells[0].Controls[0];
if (chk.Checked)
{
string username = row.Cells[1].Text;
Membership.DeleteUser(username);
BindGridviewData();
}
}
}