Question

有人能告诉我如何处理将一串字符串传递给LINQ存储过程吗？

通过将现有的sproc拖到dbml页面上来创建storedProc。 storedProc采用3个（或任意数量）参数来确定GetStringParams()中的值。

错误：No overload for storedProc takes 1 argument

DataClassDataContext db = new DataClassDataContext();
//storedProc takes 3 params
gridview.DataSource = db.storedProc(GetStringParams());
gridview.DataBind();

private string[] GetStringParams()
{
    string[] params = new string[3];    
    //Perform some logic here to determine which params to pass
    if (somethingIsTrue)
        params = new string[] { "param1", "param2", "param3" };
    else if (somethingElseIsTrue)
        params = new string[] { "param1", "param2", "" };
    else
        params = new string[] { "", "", "" };
    return params;
}

先谢谢。我搜索了这个问题，但找不到我要找的确切内容。优选地，不必修改sproc。

Answer 1

DataClassDataContext db = new DataClassDataContext();
//storedProc takes 3 params
string[] param = GetStringParams();
gridview.DataSource = db.storedProc(param[0], param[1], param[2]);
gridview.DataBind();

private string[] GetStringParams()
{
    //Perform some logic here to determine which params to pass
    if (somethingIsTrue)
        return new string[] { "param1", "param2", "param3" };
    else if (somethingElseIsTrue)
        return new string[] { "param1", "param2", "" };
    else
        return new string[] { "", "", "" };
}

除非方法要求使用params数组，否则无法将数组传递给多参数方法。

将字符串数组传递给LINQ存储过程

1 个答案: