Question

I have an ObjectDataSource with an ID of ObjectDataSource1 on a webpage. I also have a gridview in which I am binding the ObjectDataSource.ID to the GridView.DataSourceID. The problem I get is when text is changed in a textbox, the code calls BrokerageTransactions.GetAllWithDt which returns a DataTable. I want to set this datatable as the DataSource for the GridView, but it is telling me that I can’t set the DataSouce and DataSourceId together. How can I fix this? Code is below. Also. Why can’t you set a DataSourceID and a DataSource when using an ObjectDataSource?

Thanks, X

protected void BrokerageChange(Object sender, EventArgs e) {     BrokerageTransactions brokerageaccountdetails =                            new BrokerageTransactions();      DataSet ds = BrokerageAccount.GetBrkID2(new                   Guid(Membership.GetUser().ProviderUserKey.ToString()),                   ddlBrokerageDetails.SelectedItem.Text.ToString());      foreach (DataRow dr in ds.Tables[0].Rows)     {         brokerageaccountdetails.BrokerageId =                                  new Guid(dr['BrkrgId'].ToString());     }      ddlBrokerageDetails.SelectedItem.Value =                          brokerageaccountdetails.BrokerageId.ToString();      if (txtTransactionsTo.Text != ''          && txtTransactionsFrom.Text != '')         ObjectDataSource1.FilterExpression =          'convert(CreateDt,System.DateTime)>Convert('' +           Convert.ToDateTime(txtTransactionsFrom.Text) + '',System.DateTime)           and Convert(CreateDt,System.DateTime)<convert(''          + Convert.ToDateTime(txtTransactionsTo.Text.ToString()) +           '',System.DateTime)';     else if (txtTransactionsFrom.Text != '')             ObjectDataSource1.FilterExpression =             'convert(CreateDt,System.DateTime)>convert('' +              Convert.ToDateTime(txtTransactionsFrom.Text) +              '',System.DateTime)';     else if (txtTransactionsTo.Text != '')             ObjectDataSource1.FilterExpression =              'convert(CreateDt,System.DateTime)             <convert(''              + Convert.ToDateTime(txtTransactionsTo.Text.ToString()) +               '',System.DateTime)';     else         ObjectDataSource1.FilterExpression = ' ';      grvBrokerage.DataSourceID = ObjectDataSource1.ID;     grvBrokerage.DataBind();      DateTime dtTransFrom = Convert.ToDateTime('1/1/1900');     DateTime dtTransTo = System.DateTime.Today;      //TransactionsTo Box is Empty     if ((txtTransactionsFrom.Text.Length > 2)      && (txtTransactionsTo.Text.Length < 2))      {         dtTransFrom = Convert.ToDateTime(txtTransactionsFrom.Text);         dtTransTo = System.DateTime.Today;     }      //TransactionsFrom Box is Empty     if ((txtTransactionsFrom.Text.Length < 2)      && (txtTransactionsTo.Text.Length > 2))     {        dtTransFrom = Convert.ToDateTime('1/1/1900');        dtTransTo = Convert.ToDateTime(txtTransactionsTo.Text);     }      //TransactionsFrom Box and TransactionsTo Box is Not Empty     if ((txtTransactionsFrom.Text.Length > 2)      && (txtTransactionsTo.Text.Length > 2))     {         dtTransFrom = Convert.ToDateTime(txtTransactionsFrom.Text);         dtTransTo = Convert.ToDateTime(txtTransactionsTo.Text);     }     // Fails Here     grvBrokerage.DataSource =      BrokerageTransactions.GetAllWithDt(brokerageaccountdetails.BrokerageId,                                         dtTransFrom,                                         dtTransTo);     grvBrokerage.DataBind();  } 

Answer 1

You got 2 options:

• Do not use the ObjectDataSource at all. You just use the DataSource property and Set It grammatically every time.
• You use the DataSourceID property of the GridView and Add 2 plain asp:Parameters with default value set. On the ObjectDataSource_Selecting Event you set these parameters through e.InputParameters[]

Hope this helps.