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asp.net - Select2 change Dropdownlist item colour if contains a string

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0

I have this Select 2 DropDownList:

 $(document).ready(function () 

 $("#<%=ddl_modelo_equipamento.ClientID%>").select2(

 placeholder: "Selecione um Modelo"

 );

 );

And I have this Code Behind which is called based on another DropDownList Changed Value that loads the information on this select2 DropDownList:

 private void changeColor(DropDownList ddl_modelo_equipamento)
 
 foreach (ListItem item in ddl_modelo_equipamento.Items)
 
 string descricao = item.Text;

 if (descricao.Contains("; Stock: 0 unid."))
 

 item.Attributes.Add("style", "color:red");
 continue;
 
 
 

For each item in the DropDownList that contains this string "; Stock: 0 unid." I want the font colour to be changed to red and it isn't changing with a Select2 DropDownList but if I change it to a normal asp DropDownList it changes the colour.
Am I doing something wrong?

javascript c# asp.net jquery-select2

share|improve this question

asked Mar 21 at 15:25

Mingo BilleMingo Bille

154

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Because a <asp:DropDownList /> renders out a standard <select> with <option>'s, and select2 replaces that markup with <div>, <span> and <ul>'s. Probably when you add that attribute it gets added to the hidden <option> but the corresponding select2 element is un-affected.
  
  – zgood
  Mar 21 at 15:29
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What code can I use to change the color of the item in Select2
  
  – Mingo Bille
  Mar 21 at 15:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Well, for starters it would probably be better to handle this in javascript and not your code-behind. Add a change event handler to select2 and do your update there.
  
  – zgood
  Mar 21 at 15:31
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  The thing is that I am really clueless about how to make this, fr
  
  – Mingo Bille
  Mar 21 at 15:38
  

  
  
  
  

add a comment | 

0

I have this Select 2 DropDownList:

 $(document).ready(function () 

 $("#<%=ddl_modelo_equipamento.ClientID%>").select2(

 placeholder: "Selecione um Modelo"

 );

 );

And I have this Code Behind which is called based on another DropDownList Changed Value that loads the information on this select2 DropDownList:

 private void changeColor(DropDownList ddl_modelo_equipamento)
 
 foreach (ListItem item in ddl_modelo_equipamento.Items)
 
 string descricao = item.Text;

 if (descricao.Contains("; Stock: 0 unid."))
 

 item.Attributes.Add("style", "color:red");
 continue;
 
 
 

For each item in the DropDownList that contains this string "; Stock: 0 unid." I want the font colour to be changed to red and it isn't changing with a Select2 DropDownList but if I change it to a normal asp DropDownList it changes the colour.
Am I doing something wrong?

javascript c# asp.net jquery-select2

share|improve this question

asked Mar 21 at 15:25

Mingo BilleMingo Bille

154

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Because a <asp:DropDownList /> renders out a standard <select> with <option>'s, and select2 replaces that markup with <div>, <span> and <ul>'s. Probably when you add that attribute it gets added to the hidden <option> but the corresponding select2 element is un-affected.
  
  – zgood
  Mar 21 at 15:29
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What code can I use to change the color of the item in Select2
  
  – Mingo Bille
  Mar 21 at 15:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Well, for starters it would probably be better to handle this in javascript and not your code-behind. Add a change event handler to select2 and do your update there.
  
  – zgood
  Mar 21 at 15:31
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  The thing is that I am really clueless about how to make this, fr
  
  – Mingo Bille
  Mar 21 at 15:38
  

  
  
  
  

add a comment | 

I have this Select 2 DropDownList:

 $(document).ready(function () 

 $("#<%=ddl_modelo_equipamento.ClientID%>").select2(

 placeholder: "Selecione um Modelo"

 );

 );

And I have this Code Behind which is called based on another DropDownList Changed Value that loads the information on this select2 DropDownList:

 private void changeColor(DropDownList ddl_modelo_equipamento)
 
 foreach (ListItem item in ddl_modelo_equipamento.Items)
 
 string descricao = item.Text;

 if (descricao.Contains("; Stock: 0 unid."))
 

 item.Attributes.Add("style", "color:red");
 continue;
 
 
 

For each item in the DropDownList that contains this string "; Stock: 0 unid." I want the font colour to be changed to red and it isn't changing with a Select2 DropDownList but if I change it to a normal asp DropDownList it changes the colour.
Am I doing something wrong?

javascript c# asp.net jquery-select2

share|improve this question

asked Mar 21 at 15:25

Mingo BilleMingo Bille

154

 $(document).ready(function () 

 $("#<%=ddl_modelo_equipamento.ClientID%>").select2(

 placeholder: "Selecione um Modelo"

 );

 );

 private void changeColor(DropDownList ddl_modelo_equipamento)
 
 foreach (ListItem item in ddl_modelo_equipamento.Items)
 
 string descricao = item.Text;

 if (descricao.Contains("; Stock: 0 unid."))
 

 item.Attributes.Add("style", "color:red");
 continue;
 
 
 

share|improve this question

asked Mar 21 at 15:25

Mingo BilleMingo Bille

154

share|improve this question

asked Mar 21 at 15:25

Mingo BilleMingo Bille

154

asked Mar 21 at 15:25

Mingo BilleMingo Bille

154

asked Mar 21 at 15:25

Mingo BilleMingo Bille

154