How to bind different table at runime using Telerik GridView?

On the Form, I have ComboBox and GridView.

I have a combobox with 4 Table names.  Once the tablename is selected, I would like to open the table using.....

string TableID = radComboBox1.SelectedItem.ToString();
string queryString = string.Format("SELECT * FROM {0})", TableID);

By the way, I could change "SELECT *" to "SELECT FirstName, LastName", etc.
Just note that these same fields are not in the other table so I will have another SELECT with different field names.  Number of fields in each table could be different

All these 4 tables have different fields.

I have radGridView1 defined.  Could someone help me write the code to bind to the GridView?  I would like to bind (to same GridView) again with different table if user changes TableName.

Thanks,
Ashok
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AshokSr. Software EngineerAsked:
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Vikram Singh SainiSoftware Engineer cum AD DeveloperCommented:
Hi,

Go this way. (Below is the code and is meant for explanation purpose)

(1) Declare combobox with names of table as:

<telerik:RadComboBox ID="rcbTables" runat="server" AutoPostBack="true" Width="100px"
        Skin="Office2010Silver" OnSelectedIndexChanged="rcbTables_SelectedIndexChanged">
        <Items>
            <telerik:RadComboBoxItem Text="Expenses" Value="Expenses" Selected="true" />
            <telerik:RadComboBoxItem Text="Earning" Value="Earning" />
        </Items>
    </telerik:RadComboBox>

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(2) Declare RadGrid as:

<telerik:RadGrid ID="RadGridData" runat="server" Width="100%" PageSize="50" AllowPaging="True"
        AutoGenerateColumns="True" DataSourceID="sdsData" Skin="Office2010Silver" AllowSorting="true"
        HorizontalAlign="Center">
    </telerik:RadGrid>

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(3) Declare SqlDataSource as:

 
<asp:SqlDataSource ID="sdsData" runat="server" ConnectionString="<%$ ConnectionStrings:accdbConString %>"
        ProviderName="<%$ ConnectionStrings:accdbConString.ProviderName %>" />

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(4) Connection string in web.config as: (Modify it as per your requirement)

 <
connectionStrings>
        <add name="accdbConString" connectionString="Connection string here" providerName="Provider name here"/>
    </connectionStrings>

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(5) Code behind (.aspx.cs) as:

public partial class Projects : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if(!IsPostBack)
                FillGrid("Expenses");
        }

        protected void rcbTables_SelectedIndexChanged(object sender, RadComboBoxSelectedIndexChangedEventArgs e)
        {
            switch (rcbTables.SelectedValue)
            {
                case "Expenses":
                    FillGrid(rcbTables.SelectedValue);
                    break;

                case "Earning":
                    FillGrid(rcbTables.SelectedValue);
                    break;
            }
        }

        public void FillGrid(string tableName)
        {
            // Set SqlDataSource data
            sdsData.SelectCommand = "SELECT * FROM " + tableName;
            sdsData.DataBind();

            // Bind the SqlDataSource data to RadGrid
            RadGridData.DataSourceID = "sdsData";
            RadGridData.DataBind();
        }
    }

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** I had tested entire code first. Let me know if you are unable to get it successfully.
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AshokSr. Software EngineerAuthor Commented:
vs00saini,

My project is not web based (ASP.NET).

It is WPF project.
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AshokSr. Software EngineerAuthor Commented:
Answer not in expected environment which is WPF.
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