Pass Key of Grid to Business Class via Object Data Source

In ASP.NET Webforms have an ASP.NET GridView connected to a C# class via an object data source

I have an ID set up as a DataKeyName in the grid. How do I pass this to the C# 开发者_Go百科class when I update the grid?

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Can pick up the grids data key name for the current row in the grids row updating event

  protected void gvSearchResults_RowUpdating(object sender, GridViewUpdateEventArgs e)
  {
    //get handle on current grid row
    DataKey keys = gvSearchResults.DataKeys[e.RowIndex];
   customerId= GeneralUtils.GetIntegerKeyValue(keys, "customerID");
  }

Then pass it to C# class using object data sources updating event

 protected void odsHauliers_Updating(object sender, ObjectDataSourceMethodEventArgs e)
  {

    e.InputParameters["customerID"] = this.customerID;
  }

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Actually data key names are passed automatically by the datagrid to the object data source.