更改sqldatasource的默认参数 [英] changing default parameter of sqldatasource

问题描述

我有2个ASPxComboBox控件。基于一个组合，我想填补另一个。我正在使用Ajax回调概念。有了它，在代码背后，我能够获得第一个组合的选定值。然后，我想知道，如何使用select存储过程绑定连接到SqlDataSource的第二个组合。我想更改SqlDataSource&的默认值。然后绑定它。我做了如下。但无法绑定。

I have 2 ASPxComboBox controls. Based on one combo, I want to fill the other. I'm using Ajax callback concept. With that, in code behind, I'm able to get the selected value of first combo. And then, I want to know, how to bind the second combo which is connected to a SqlDataSource with select stored procedure. I want to change the default value of the SqlDataSource & then bind it. I did as follows. But unable to bind.

SqlDataSource2.SelectParameters["input4"].DefaultValue = "combo1Value";
       secondCombo.DataBind();

提前致谢

Thanks in advance

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