CRM Linq

//PickList values

private Dictionary<String, String> PickList(String entityName, String attID, string attName)
{
    Dictionary<String, String> dic = new Dictionary<String, String>();
    IOrganizationService service = (IOrganizationService)serviceProxy;
    QueryExpression qryExp = new QueryExpression(entityName);
    qryExp.ColumnSet = new ColumnSet(attName);
    EntityCollection entCollection = service.RetrieveMultiple(qryExp);
    dic = entCollection.Entities
        .Where(e => (e.Attributes.ContainsKey(attName)))
        .ToDictionary(e => e.Attributes[attID].ToString(), e => e.Attributes[attName].ToString());
    /*int i=1;
    foreach (var c in entCollection.Entities)
    {
        if (c.Attributes.ContainsKey(attName))
        {
        dic.Add(c.Attributes[attID].ToString(), c.Attributes[attName].ToString());
        }
    }*/
}

CRM Dynamics 2011 - Dynamic Entity

Using C# and IOrganizationService Web Service - A Simple Application will display, add, modify and delete Entity records.

Form design

<div>
        <strong>Contact Form - <asp:Button ID="Insert" runat="server" OnClick="Insert_Click" Text="Insert" /><br /></strong>
        <asp:Literal ID="litViewAll" runat="server"></asp:Literal><br />
        <asp:Panel runat="server" ID="panDetails" Visible="false">
        First Name<asp:TextBox ID="txtFirstName" runat="server"></asp:TextBox><br />
        Last Name<asp:TextBox ID="txtLastName" runat="server"></asp:TextBox><br />
        Address<asp:TextBox ID="txtAddress" runat="server"></asp:TextBox><br />
        City<asp:TextBox ID="txtCity" runat="server"></asp:TextBox><br />
        Zip<asp:TextBox ID="txtZip" runat="server"></asp:TextBox><br />
        State<asp:DropDownList ID="ddlSList" runat="server" AppendDataBoundItems="true">
            <asp:ListItem Selected="True" Text="Select SList" Value="00000000-0000-0000-0000-000000000000"/>
        </asp:DropDownList><br />
        Municipality Name<asp:DropDownList ID="ddlJList" runat="server" AppendDataBoundItems="true">
            <asp:ListItem Selected="True" Text="Select MList" Value="00000000-0000-0000-0000-000000000000"/>
        </asp:DropDownList><br/>      
        <asp:Button ID="CreateNew" runat="server" OnClick="CreateNew_Click" Text="Create" />
        <asp:Button ID="Delete" runat="server" OnClick="Delete_Click" Text="Delete" />
        <asp:Button ID="Update" runat="server" OnClick="Update_Click" Text="Update" /><br />
        </asp:Panel>
        </div>