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RowCommand 中DataItem的有关问题

2012-06-30 
RowCommand 中DataItem的问题C# code protected void gdvMain_RowCommand(object sender, GridViewCommand

RowCommand 中DataItem的问题

C# code
 protected void gdvMain_RowCommand(object sender, GridViewCommandEventArgs e)    {        string mark = string.Empty;        if (e.CommandArgument != null)        {            mark = e.CommandArgument.ToString();        }        if (e.CommandName.Equals("Mark")&&!mark.Equals("YZ"))        {            GridViewRow gvrow = ((e.CommandSource as ImageButton).NamingContainer) as GridViewRow;            int id = 0;            if (gvrow != null)            {                DataRowView drvMain = gvrow.DataItem as DataRowView;                if (drvMain != null)                {                    int.TryParse(Convert.ToString(drvMain["ID"]), out id);                }            }            PeprisOA.Model.CashCall modelCash = new PeprisOA.Model.CashCall();            PeprisOA.BLL.CashCall managerCash = new PeprisOA.BLL.CashCall();            modelCash = managerCash.GetModel(id);            if (modelCash != null)            {                switch (mark)                {                    case "WS":                        modelCash.FsValue = "CS";                        break;                    case "CS":                        modelCash.FsValue = "FS";                        break;                    case "FS":                        modelCash.FsValue = "FH";                        break;                    case "FH":                        modelCash.FsValue = "YZ";                        break;                    default:                        modelCash.FsValue = "CS";                        break;                }                if (managerCash.Update(modelCash))                {                    PeprisOA.Common.JsUtil.Alert(this, "批复成功!");                }                else                {                    PeprisOA.Common.JsUtil.Alert(this, "批复失败,请重新批复!");                }            }        }


代码如上,为什么DataRowView drvMain = gvrow.DataItem as DataRowView;的DataItem为Null?

[解决办法]
跟踪,确认转换对象存在
[解决办法]
绑定代码写在回发里吧 IsPostBack

这样回发的时候 不会触发绑定, 值是从ViewState中取的

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