Convert string to a control

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  • Sue
    #1

    Convert string to a control

    All

    I have a bunch of label controls on my form. All those label controls
    will start with the id "lblEffDt_" .
    (lblEffDateValu e_ddlDeliveryMe thod, lblEffDateValue _txtPriority
    etc...)

    I want to have a common function, which receives the id of the
    control as a string (which would be the string after the _ underscore
    in the lblEffDate) along with actual value and based on it set some
    value.

    private void EnableChangedCo ntrols(string controlName, string effDate)
    {
    ((Label)("lblEf fDateValue_" + controlName)).T ext = effDate;
    }

    and I can call that fucntion as

    EnableChangedCo ntrols("ddlDeli veryMethod", "01/01/07");

    But it erros out with the message

    "Cannot convert type 'string' to 'System.Web.UI. WebControls.Lab el'

    Is there an easier way to do this. I have whole lot of controls on the
    webform and doing something similar will help.

    thanks
    sue..

    Tags: None
    • AlexS
      #2
      Re: Convert string to a control

      You can do this with reflection. See PropertyInfo.Se tValue method and
      related samples in VS help or in MSDN

      Or you can enumerate Controls collection of the form - unchecked code:

      foreach (Control c in form.Controls) {
      if (c is Label) {
      if (c.Name == yourName) {....}
      }
      }

      "Sue" <iyer_sansid@ho tmail.comwrote in message
      news:1184954707 .382906.264310@ 22g2000hsm.goog legroups.com...
      All
      >
      I have a bunch of label controls on my form. All those label controls
      will start with the id "lblEffDt_" .
      (lblEffDateValu e_ddlDeliveryMe thod, lblEffDateValue _txtPriority
      etc...)
      >
      I want to have a common function, which receives the id of the
      control as a string (which would be the string after the _ underscore
      in the lblEffDate) along with actual value and based on it set some
      value.
      >
      private void EnableChangedCo ntrols(string controlName, string effDate)
      {
      ((Label)("lblEf fDateValue_" + controlName)).T ext = effDate;
      }
      >
      and I can call that fucntion as
      >
      EnableChangedCo ntrols("ddlDeli veryMethod", "01/01/07");
      >
      But it erros out with the message
      >
      "Cannot convert type 'string' to 'System.Web.UI. WebControls.Lab el'
      >
      Is there an easier way to do this. I have whole lot of controls on the
      webform and doing something similar will help.
      >
      thanks
      sue..
      >
      >

        Comment

        • Sue
          #3
          Re: Convert string to a control

          On Jul 20, 1:22 pm, "AlexS" <salexru200...@ SPAMrogers.comP LEASE>
          wrote:
          You can do this with reflection. See PropertyInfo.Se tValue method and
          related samples in VS help or in MSDN
          >
          Or you can enumerate Controls collection of the form - unchecked code:
          >
          foreach (Control c in form.Controls) {
          if (c is Label) {
          if (c.Name == yourName) {....}
          }
          >
          }
          "Sue" <iyer_san...@ho tmail.comwrote in message
          >
          news:1184954707 .382906.264310@ 22g2000hsm.goog legroups.com...
          >
          >
          >
          All
          >
          I have a bunch of label controls on my form. All those label controls
          will start with the id "lblEffDt_" .
          (lblEffDateValu e_ddlDeliveryMe thod, lblEffDateValue _txtPriority
          etc...)
          >
          I want to have a common function, which receives the id of the
          control as a string (which would be the string after the _ underscore
          in the lblEffDate) along with actual value and based on it set some
          value.
          >
          private void EnableChangedCo ntrols(string controlName, string effDate)
          {
          ((Label)("lblEf fDateValue_" + controlName)).T ext = effDate;
          }
          >
          and I can call that fucntion as
          >
          EnableChangedCo ntrols("ddlDeli veryMethod", "01/01/07");
          >
          But it erros out with the message
          >
          "Cannot convert type 'string' to 'System.Web.UI. WebControls.Lab el'
          >
          Is there an easier way to do this. I have whole lot of controls on the
          webform and doing something similar will help.
          >
          thanks
          sue..- Hide quoted text -
          >
          - Show quoted text -
          All

          I found an easier solution.

          <form id="form1" runat="server">
          <asp:Label runat="server" id="lblText"</asp:Label>
          </form>

          protected void Page_Load(objec t sender, EventArgs e)
          {
          EnableChangedCo ntrols("Text", "1/1/2006");
          }

          private void EnableChangedCo ntrols(string controlName, string
          effDate)
          {
          Label lbl = (Label)FindCont rol("lbl" + controlName);
          lbl.Text = effDate;
          lbl.Visible = true;
          }

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