How to change Modal form to non-modal on an event?











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I am developing an VSTO application and looking to develop a similar form
enter image description here



This form is available under Excel > Formulas > Define Name. The specialty about this form is when this form is opened this is a modal form (you will not be able to click anything in the parent application which is excel), however when you click on Refers to text box, it turns non-modal form and you can select the excel cells and populate address into it. How can this be created?



So far, I tried topmost, hiding and showing it on textbox focus etc.



can someone please give me an idea of how this can be created










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    up vote
    0
    down vote

    favorite












    I am developing an VSTO application and looking to develop a similar form
    enter image description here



    This form is available under Excel > Formulas > Define Name. The specialty about this form is when this form is opened this is a modal form (you will not be able to click anything in the parent application which is excel), however when you click on Refers to text box, it turns non-modal form and you can select the excel cells and populate address into it. How can this be created?



    So far, I tried topmost, hiding and showing it on textbox focus etc.



    can someone please give me an idea of how this can be created










    share|improve this question


























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I am developing an VSTO application and looking to develop a similar form
      enter image description here



      This form is available under Excel > Formulas > Define Name. The specialty about this form is when this form is opened this is a modal form (you will not be able to click anything in the parent application which is excel), however when you click on Refers to text box, it turns non-modal form and you can select the excel cells and populate address into it. How can this be created?



      So far, I tried topmost, hiding and showing it on textbox focus etc.



      can someone please give me an idea of how this can be created










      share|improve this question















      I am developing an VSTO application and looking to develop a similar form
      enter image description here



      This form is available under Excel > Formulas > Define Name. The specialty about this form is when this form is opened this is a modal form (you will not be able to click anything in the parent application which is excel), however when you click on Refers to text box, it turns non-modal form and you can select the excel cells and populate address into it. How can this be created?



      So far, I tried topmost, hiding and showing it on textbox focus etc.



      can someone please give me an idea of how this can be created







      winforms modal-dialog vsto excel-addins modeless-dialog






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      edited Nov 9 at 12:04









      Cindy Meister

      13.3k101934




      13.3k101934










      asked Nov 9 at 3:39









      Sam K

      205




      205





























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