How to properly format date fields coming out of an MS SQL database

I have this SQL command and the aplydate and glpostdt fields are dates.

DataCommand.CommandText = "select aplydate,glpostdt,distref from job_linker where companyid = '" + CompanyID + "' and bchsourc = 'Apply_Documents' and transnmbr ='" + ApplyToVoucherNumber + "' and trxtype = 'Apply Payments ' and dstsqnum = 16384 and cntrltyp = 0 and aptvchnm = '" + ApplyToDocumentNumber + "' and spcldist = 0 and len(rtrim(jobnumber))>0";

I obtain the values with this code

                DataDataAdapter = new System.Data.SqlClient.SqlDataAdapter();
                DataDataAdapter.SelectCommand = DataCommand;
                DataDataAdapter.TableMappings.Add("Table", "DISTREF");

                this.txtApplyDate.DataBindings.Add("Text", DataDataSet.Tables["DISTREF"], "aplydate").ToString();
                this.txtApplyPostingDate.DataBindings.Add("Text", DataDataSet.Tables["DISTREF"], "glpostdt").ToString();

It is the last two lines where I am stumped. I want the format of the dates to be MM/dd/yyyy.  When I try
                this.txtApplyDate.DataBindings.Add("Text", DataDataSet.Tables["DISTREF"], "aplydate").ToString("MM/dd/yyyy")
I receive an error.

What is the correct way to format these date fields?
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rwheeler23Asked:
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Kyle AbrahamsSenior .Net DeveloperCommented:
I would normally do this from the SQL side

select  convert(varchar(12), aplydate, 101) as aplydate, ...

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Note that the sql query itself looks vulnerable to sql injection.

If you wanted to do it to the dataBinding side:

txtApplyDate.DataBindings.Add("Text", DataDataSet.Tables["DISTREF"], "aplydate",true, DataSourceUpdateMode.OnPropertyChanged, "1/1/1900", "MM/dd/yyyy")

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rwheeler23Author Commented:
Thanks. That is something else I need to read up on, sql injection.
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rwheeler23Author Commented:
So from a sql injection side, is it better to do the conversion on the data binding side? No data input is happening on the user side with this query.  Is it still susceptible to sql injection?
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AndyAinscowFreelance programmer / ConsultantCommented:
this.txtApplyDate.DataBindings.Add("Text", DataDataSet.Tables["DISTREF"], "aplydate").ToString("MM/dd/yyyy")

You are applying the ToString to the DataBindings.Add, I think you want:
this.txtApplyDate.DataBindings.Add(("Text", DataDataSet.Tables["DISTREF"], "aplydate").ToString("MM/dd/yyyy"))
or something along those lines
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Kyle AbrahamsSenior .Net DeveloperCommented:
If there's no user input then no need to worry about sql injection.  Saw the variables, didn't know where they were coming from.
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rwheeler23Author Commented:
Thnaks
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