带C#的ASP.net下拉菜单和文本框 [英] ASP.net with c# Drop down and textbox

问题描述

(DropDownList)location =(DropDownList)GridView1.FooterRow.FindControl("Location");
(TextBox)item =(TextBox)GridView1.FooterRow.FindControl(工作项");



当我执行显示错误的代码行时:无法将类型``string''转换为``System.Web.UI.WebControls.DropDownList''

解决方案

Do这个:

位置=(DropDownList)(GridView1.FooterRow.FindControl(" ))；
item =(TextBox)(GridView1.FooterRow.FindControl(" ))) pre> 

DropDownList location =(DropDownList)(GridView1.FooterRow.FindControl("Location"));
TextBox item =(TextBox)(GridView1.FooterRow.FindControl(工作条目")));

(DropDownList)location = (DropDownList)GridView1.FooterRow.FindControl("Location");
(TextBox)item = (TextBox)GridView1.FooterRow.FindControl("Item of Work");



When i execute the code above line showing error:Cannot convert type ''string'' to ''System.Web.UI.WebControls.DropDownList''

解决方案

Do this:

location = (DropDownList)(GridView1.FooterRow.FindControl("Location"));
item     = (TextBox)(GridView1.FooterRow.FindControl("Item of Work"));

DropDownList location = (DropDownList)(GridView1.FooterRow.FindControl("Location"));
TextBox item = (TextBox)(GridView1.FooterRow.FindControl("Item of Work"));

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