无法将类型为“System.Web.UI.DataBoundLiteralControl”的对象强制转换为类型“System.Web.UI.WebControls.TextBox”。
说明: 执行当前 Web 请求期间,出现未处理的异常。请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息。 异常详细信息: System.InvalidCastException: 无法将类型为“System.Web.UI.DataBoundLiteralControl”的对象强制转换为类型“System.Web.UI.WebControls.TextBox”。
代码如下:这是那里错啊
SqlConnection con = new SqlConnection("server=.;Initial Catalog=webdata;Integrated Security=True");
con.Open();
string sqlstr = "update userlist set username='"
+ ((TextBox)(GridView2.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',pwd='"
+ ((TextBox)(GridView2.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "' where id='"
+ GridView2.DataKeys[e.RowIndex].Value.ToString() + "'";
SqlCommand cmd = new SqlCommand(sqlstr, con);
cmd.ExecuteNonQuery();
con.Close();
GridView2.EditIndex = -1;
this.databinder();
说明: 执行当前 Web 请求期间,出现未处理的异常。请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息。 异常详细信息: System.InvalidCastException: 无法将类型为“System.Web.UI.DataBoundLiteralControl”的对象强制转换为类型“System.Web.UI.WebControls.TextBox”。
代码如下:这是那里错啊
SqlConnection con = new SqlConnection("server=.;Initial Catalog=webdata;Integrated Security=True");
con.Open();
string sqlstr = "update userlist set username='"
+ ((TextBox)(GridView2.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',pwd='"
+ ((TextBox)(GridView2.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "' where id='"
+ GridView2.DataKeys[e.RowIndex].Value.ToString() + "'";
SqlCommand cmd = new SqlCommand(sqlstr, con);
cmd.ExecuteNonQuery();
con.Close();
GridView2.EditIndex = -1;
this.databinder();
或者用FindControl方法找到TextBox
或者你调试到那步看一个Cell里第几个你要的控件。
代码如下:这是那里错啊
SqlConnection con = new SqlConnection("server=.;Initial Catalog=webdata;Integrated Security=True");
con.Open();
string sqlstr = "update userlist set username='"
+ Convert.ToString((TextBox)(GridView2.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',pwd='"
+ Convert.ToString((TextBox)(GridView2.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "' where id='"
+ GridView2.DataKeys[e.RowIndex].Value.ToString() + "'";
SqlCommand cmd = new SqlCommand(sqlstr, con);
cmd.ExecuteNonQuery();
con.Close();
GridView2.EditIndex = -1;
this.databinder();
TextBox tb2 = (TextBox)GridView2.Rows[e.RowIndex].FindControl("控件标识2");
SqlConnection con = new SqlConnection("server=.;Initial Catalog=webdata;Integrated Security=True");
con.Open();
string sqlstr = "update userlist set username='"
+ tb1.Text.Trim() + "',pwd='"
+ tb2.Text.Trim() + "' where id='"
+ GridView2.DataKeys[e.RowIndex].Value.ToString() + "'";
SqlCommand cmd = new SqlCommand(sqlstr, con);
cmd.ExecuteNonQuery();
con.Close();
GridView2.EditIndex = -1;
this.databinder();