Question

我绑定了从Oracle数据库读取的Gridview。我有一个编辑和删除按钮。我的目标是，当我选择某个表并按下编辑按钮时，将前两个文本框替换为下拉列表，以便限制用户可以选择的内容，以便使用下拉列表中的selectedValue将SQL语句运行到数据库中而不是文本框值。我没有TemplateFields可以引用Gridview中的列，因为它们是自动生成的。当我在Gridview上按下更新按钮时，它不会从DropDownList选定的值更新，而是从Gridview中的文本值更新。这是我的代码的片段：

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
  if (e.Row.RowType == DataControlRowType.DataRow)
            {
                if ((e.Row.RowState & DataControlRowState.Edit) > 0)
                {
                     //Locate the textboxs I want to replace
                    TextBox disableJOBRun = e.Row.Cells[2].Controls[0] as TextBox;

                    TextBox disableAction = e.Row.Cells[3].Controls[0] as TextBox;
                   //Create the new DropDownLists
                    DropDownList JobRunSelection = new DropDownList();

                    DropDownList ActionSelection = new DropDownList();
                    //Bind the DropDownLists

                   JobRunSelection.DataSource = ds;
                   JobRunSelection.DataValueField = "JOBNAME";
                   JobRunSelection.DataBind();

                    ActionSelection.DataSource = dsTwo;
                    ActionSelection.DataValueField = "NAME";
                    ActionSelection.DataBind();
                    con.Close();

                     //Change Text of Textbox 
                    JobRunSelection.SelectedValue = disableJOBRun.Text;

                    ActionSelection.SelectedValue = disableAction.Text;

                    //Add the DropdownsLists to the Gridview
                    e.Row.Cells[2].Controls.Add(JobRunSelection);

                    e.Row.Cells[3].Controls.Add(ActionSelection);


                    JobRunSelection.Attributes.Add("runat", "server");

                    ActionSelection.Attributes.Add("runat", "server");


                    JobRunSelection.ID = "DropDownJobRunSelection";

                    ActionSelection.ID = "DropDownActionSelection";
                    //Hide Textboxes
                    disableJOBRun.Visible = false;
                    disableAction.Visible = false;
                  }
}  
protected void GridView1_RowUpdating(object sender, System.Web.UI.WebControls.GridViewUpdateEventArgs e)

        //Get Connection to database
        GridViewRow row = GridView1.Rows[e.RowIndex];
        String newJobID = ((TextBox)(row.Cells[2].Controls[0])).Text;
        String newAction = ((TextBox)(row.Cells[3].Controls[0])).Text;
        //Update Table
        cmd.CommandText = "UPDATE " + SelectedTable + " SET JOBID = :param2,   WHERE " + KeyName + " = " + "'" + KeyValue + "'";
        cmd.Parameters.Add(":param2", newJobID);
        cmd.Parameters.Add(":param3", newAction);

也许Page_Load将文本重置为原始文本？如果是这样，我将如何实现我的DropDownLists？感谢您的帮助，我将发布更多必要的代码。

Answer 1

我解决了我的问题，我已经切换了Dropdownlist选择值和文本框文本的变量顺序。切换它们后，我的文本框会更改它们的值。

DropDownList选择而不是自动生成的Gridview列中的文本框

1 个答案: