TextBoxid和TextBoxname都是模板列里的TextBox,在后台写了如下语句TextBox tbId = this.form1.FindControl("TextBoxid") as TextBox;
TextBox tbName = this.form1.FindControl("TextBoxname") as TextBox;
string id = tbId.Text.ToString();//该句报错
string name = tbName.Text;第三行语句报错未将对象引用设置到对象的实例
请问各位,这个错误该怎么改呢?
TextBox tbName = this.form1.FindControl("TextBoxname") as TextBox;
string id = tbId.Text.ToString();//该句报错
string name = tbName.Text;第三行语句报错未将对象引用设置到对象的实例
请问各位,这个错误该怎么改呢?
TextBox tbId = new TextBox();
TextBox tbName = new TextBox();
tbId = this.form1.FindControl("TextBoxid") as TextBox;
tbName = this.form1.FindControl("TextBoxname") as TextBox;
string id = tbId.Text.ToString();//该句报错
string name = tbName.Text;
可能是没找到名为TextBoxid的TextBox控件,所以tbId未实例化,
所以下边报错了
你可以判断是否为null
TextBox tbName = this.form1.FindControl("TextBoxname") as TextBox;
string id = tbId.Text.ToString();//该句报错
string name = tbName.Text;tbId.Text.ToString(); 确定这个有值吗?
因为TextBoxname在GridView1的FooterTemplate里面,所以应该按照下面的方式找到控件。
TextBox tbName = GridView1.FooterRow.FindControl("TextBoxname") as TextBox;