[Solved] ASP.Net Error: Cannot implicitly convert type object to System.Data.DataRowView

I am trying to implement Cascading Dropdown list in GridView in Edit mode.

The code is VB and working as desired. However I am stuck while converting this Code in C#.

Getting compilation error 'CS0266: Cannot implicitly convert type 'object' to 'System.Data.DataRowView'. An explicit conversion exists (are you missing a cast?)'.

Please help.

<script runat="server">
    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        DropDownList listManufacturers = (DropDownList)GridView1.Rows[e.RowIndex].FindControl("listManufacturers");
        DropDownList listModels = (DropDownList)GridView1.Rows[e.RowIndex].FindControl("listModels");
        e.NewValues["Manufacturer"] = listManufacturers.SelectedValue;
        e.NewValues["Model"] = listModels.SelectedValue;
    }

    protected void GridView1_RowDataBound(object sender, System.Web.UI.WebControls.GridViewRowEventArgs e)
    {
        if (((e.Row.RowState & DataControlRowState.Edit) == DataControlRowState.Edit))
        {
            System.Data.DataRowView dv = e.Row.DataItem;
            DropDownList listManufacturers = e.Row.FindControl("listManufacturers");
            listManufacturers.SelectedValue = dv("Manufacturer");
            DropDownList listModels = e.Row.FindControl("listModels");
            SqlDataSource dsc = e.Row.FindControl("dsModelsByManufacturer");
            dsc.SelectParameters("Manufacturer").DefaultValue = dv["Manufacturer"];
            listModels.DataBind();
            listModels.SelectedValue = dv("Model");
        }
    }
    protected void listManufacturers_SelectedIndexChanged(object sender, EventArgs e)
    {
        DropDownList listManufacturers, listModels;
        SqlDataSource dsModelsByManufacturer;
        int currentRowInEdit = GridView1.EditIndex;
        listManufacturers = (DropDownList)sender;
        listModels = (DropDownList)GridView1.Rows[currentRowInEdit].FindControl("listModels");
        dsModelsByManufacturer = (SqlDataSource)GridView1.Rows[currentRowInEdit].FindControl("dsModelsByManufacturer");
        dsModelsByManufacturer.SelectParameters["Manufacturer"].DefaultValue = listManufacturers.SelectedValue;
        listModels.DataBind();
    }
</script>